64739695 has 4 divisors (see below), whose sum is σ = 77687640. Its totient is φ = 51791752.

The previous prime is 64739693. The next prime is 64739699. The reversal of 64739695 is 59693746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64739695 - 2¹ = 64739693 is a prime.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (64739693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6473965 + ... + 6473974.

It is an arithmetic number, because the mean of its divisors is an integer number (19421910).

Almost surely, 2^64739695 is an apocalyptic number.

64739695 is a deficient number, since it is larger than the sum of its proper divisors (12947945).

64739695 is a wasteful number, since it uses less digits than its factorization.

64739695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12947944.

The product of its digits is 1224720, while the sum is 49.

The square root of 64739695 is about 8046.0981226928. The cubic root of 64739695 is about 401.5351321364.

The spelling of 64739695 in words is "sixty-four million, seven hundred thirty-nine thousand, six hundred ninety-five".