64235616 has 24 divisors (see below), whose sum is σ = 168618744. Its totient is φ = 21411840.

The previous prime is 64235603. The next prime is 64235621. The reversal of 64235616 is 61653246.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334465 + ... + 334656.

It is an arithmetic number, because the mean of its divisors is an integer number (7025781).

Almost surely, 2^64235616 is an apocalyptic number.

It is an amenable number.

64235616 is an abundant number, since it is smaller than the sum of its proper divisors (104383128).

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

64235616 is a wasteful number, since it uses less digits than its factorization.

64235616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669134 (or 669126 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 64235616 is about 8014.7124714490. The cubic root of 64235616 is about 400.4902655205.

The spelling of 64235616 in words is "sixty-four million, two hundred thirty-five thousand, six hundred sixteen".