65220912 has 30 divisors (see below), whose sum is σ = 182528372. Its totient is φ = 21740256.

The previous prime is 65220889. The next prime is 65220919. The reversal of 65220912 is 21902256.

65220912 is a `hidden beast` number, since 652 + 2 + 0 + 9 + 1 + 2 = 666.

It is a super-2 number, since 2×65220912² = 8507534724223488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65220919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 226318 + ... + 226605.

Almost surely, 2^65220912 is an apocalyptic number.

It is an amenable number.

65220912 is an abundant number, since it is smaller than the sum of its proper divisors (117307460).

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

65220912 is a wasteful number, since it uses less digits than its factorization.

65220912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452937 (or 452928 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 65220912 is about 8075.9465079952. The cubic root of 65220912 is about 402.5275616069.

The spelling of 65220912 in words is "sixty-five million, two hundred twenty thousand, nine hundred twelve".