64935688 has 8 divisors (see below), whose sum is σ = 121754430. Its totient is φ = 32467840.

The previous prime is 64935683. The next prime is 64935691. The reversal of 64935688 is 88653946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39715204 + 25220484 = 6302^2 + 5022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64935683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058473 + ... + 4058488.

Almost surely, 2^64935688 is an apocalyptic number.

It is an amenable number.

64935688 is a deficient number, since it is larger than the sum of its proper divisors (56818742).

64935688 is a wasteful number, since it uses less digits than its factorization.

64935688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8116967 (or 8116963 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 64935688 is about 8058.2683003236. The cubic root of 64935688 is about 401.9399265034.

The spelling of 64935688 in words is "sixty-four million, nine hundred thirty-five thousand, six hundred eighty-eight".