764707216 has 80 divisors (see below), whose sum is σ = 1831382784. Its totient is φ = 301220352.

The previous prime is 764707189. The next prime is 764707241. The reversal of 764707216 is 612707467.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381930 + ... + 383926.

Almost surely, 2^764707216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764707216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915691392).

764707216 is an abundant number, since it is smaller than the sum of its proper divisors (1066675568).

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

764707216 is a wasteful number, since it uses less digits than its factorization.

764707216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 764707216 is about 27653.3400514296. The cubic root of 764707216 is about 914.4607355227.

The spelling of 764707216 in words is "seven hundred sixty-four million, seven hundred seven thousand, two hundred sixteen".