65618016 has 48 divisors (see below), whose sum is σ = 175924224. Its totient is φ = 21405824.

The previous prime is 65617997. The next prime is 65618029. The reversal of 65618016 is 61081656.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760 + ... + 11783.

It is an arithmetic number, because the mean of its divisors is an integer number (3665088).

Almost surely, 2^65618016 is an apocalyptic number.

It is an amenable number.

65618016 is an abundant number, since it is smaller than the sum of its proper divisors (110306208).

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

65618016 is a wasteful number, since it uses less digits than its factorization.

65618016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603 (or 14595 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 65618016 is about 8100.4947997021. The cubic root of 65618016 is about 403.3428521913.

The spelling of 65618016 in words is "sixty-five million, six hundred eighteen thousand, sixteen".