65727216 has 30 divisors (see below), whose sum is σ = 183945320. Its totient is φ = 21909024.

The previous prime is 65727209. The next prime is 65727217. The reversal of 65727216 is 61272756.

65727216 is a `hidden beast` number, since 6 + 572 + 72 + 16 = 666.

It is a super-2 number, since 2×65727216² = 8640133846221312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65727217) 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, 228076 + ... + 228363.

Almost surely, 2^65727216 is an apocalyptic number.

It is an amenable number.

65727216 is an abundant number, since it is smaller than the sum of its proper divisors (118218104).

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

65727216 is a wasteful number, since it uses less digits than its factorization.

65727216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456453 (or 456444 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 65727216 is about 8107.2323267562. The cubic root of 65727216 is about 403.5664728359.

The spelling of 65727216 in words is "sixty-five million, seven hundred twenty-seven thousand, two hundred sixteen".