536139697 has 4 divisors (see below), whose sum is σ = 539738100. Its totient is φ = 532541296.

The previous prime is 536139677. The next prime is 536139707. The reversal of 536139697 is 796931635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 796931635 = 5 ⋅159386327.

It can be written as a sum of positive squares in 2 ways, for example, as 114083761 + 422055936 = 10681^2 + 20544^2 .

It is a cyclic number.

It is not a de Polignac number, because 536139697 - 2²³ = 527751089 is a prime.

It is a super-3 number, since 3×536139697³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 536139697.

It is not an unprimeable number, because it can be changed into a prime (536139607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798978 + ... + 1799275.

It is an arithmetic number, because the mean of its divisors is an integer number (134934525).

Almost surely, 2^536139697 is an apocalyptic number.

It is an amenable number.

536139697 is a deficient number, since it is larger than the sum of its proper divisors (3598403).

536139697 is a wasteful number, since it uses less digits than its factorization.

536139697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598402.

The product of its digits is 918540, while the sum is 49.

The square root of 536139697 is about 23154.6906047133. The cubic root of 536139697 is about 812.3801843677.

The spelling of 536139697 in words is "five hundred thirty-six million, one hundred thirty-nine thousand, six hundred ninety-seven".