64135616 has 28 divisors (see below), whose sum is σ = 129177288. Its totient is φ = 31587072.

The previous prime is 64135613. The next prime is 64135619. The reversal of 64135616 is 61653146.

It is an interprime number because it is at equal distance from previous prime (64135613) and next prime (64135619).

It is a super-2 number, since 2×64135616² = 8226754479398912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64135613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3191 + ... + 11766.

Almost surely, 2^64135616 is an apocalyptic number.

It is an amenable number.

64135616 is an abundant number, since it is smaller than the sum of its proper divisors (65041672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64135616 is a wasteful number, since it uses less digits than its factorization.

64135616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15036 (or 15026 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 64135616 is about 8008.4715145900. The cubic root of 64135616 is about 400.2823340052.

The spelling of 64135616 in words is "sixty-four million, one hundred thirty-five thousand, six hundred sixteen".