64253616 has 40 divisors (see below), whose sum is σ = 189702144. Its totient is φ = 18358080.

The previous prime is 64253599. The next prime is 64253617. The reversal of 64253616 is 61635246.

It is not an unprimeable number, because it can be changed into a prime (64253617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95280 + ... + 95951.

Almost surely, 2^64253616 is an apocalyptic number.

It is an amenable number.

64253616 is an abundant number, since it is smaller than the sum of its proper divisors (125448528).

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

64253616 is a wasteful number, since it uses less digits than its factorization.

64253616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191249 (or 191243 counting only the distinct ones).

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

The square root of 64253616 is about 8015.8353276499. The cubic root of 64253616 is about 400.5276702708.

The spelling of 64253616 in words is "sixty-four million, two hundred fifty-three thousand, six hundred sixteen".