64689097 has 32 divisors (see below), whose sum is σ = 78102144. Its totient is φ = 52915200.

The previous prime is 64689089. The next prime is 64689109. The reversal of 64689097 is 79098646.

It is not a de Polignac number, because 64689097 - 2³ = 64689089 is a prime.

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 64689097.

It is not an unprimeable number, because it can be changed into a prime (64689007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604518 + ... + 604624.

It is an arithmetic number, because the mean of its divisors is an integer number (2440692).

Almost surely, 2^64689097 is an apocalyptic number.

It is an amenable number.

64689097 is a deficient number, since it is larger than the sum of its proper divisors (13413047).

64689097 is a wasteful number, since it uses less digits than its factorization.

64689097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 64689097 is about 8042.9532511385. The cubic root of 64689097 is about 401.4304968485.

The spelling of 64689097 in words is "sixty-four million, six hundred eighty-nine thousand, ninety-seven".