765612216 has 64 divisors (see below), whose sum is σ = 2158483200. Its totient is φ = 251390304.

The previous prime is 765612193. The next prime is 765612269. The reversal of 765612216 is 612216567.

It is a happy number.

765612216 is a `hidden beast` number, since 76 + 561 + 2 + 21 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11980 + ... + 40923.

It is an arithmetic number, because the mean of its divisors is an integer number (33726300).

Almost surely, 2^765612216 is an apocalyptic number.

It is an amenable number.

765612216 is an abundant number, since it is smaller than the sum of its proper divisors (1392870984).

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

765612216 is a wasteful number, since it uses less digits than its factorization.

765612216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52985 (or 52975 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 765612216 is about 27669.6985166084. The cubic root of 765612216 is about 914.8213357153.

The spelling of 765612216 in words is "seven hundred sixty-five million, six hundred twelve thousand, two hundred sixteen".