764928852840 has 48 divisors (see below), whose sum is σ = 2486018772900. Its totient is φ = 203981027328.

The previous prime is 764928852769. The next prime is 764928852869. The reversal of 764928852840 is 48258829467.

764928852840 is a `hidden beast` number, since 7 + 6 + 49 + 28 + 8 + 528 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 738853708356 + 26075144484 = 859566^2 + 161478^2 .

It is a super-2 number, since 2×764928852840² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062400825 + ... + 1062401544.

Almost surely, 2^764928852840 is an apocalyptic number.

It is an amenable number.

764928852840 is an abundant number, since it is smaller than the sum of its proper divisors (1721089920060).

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

764928852840 is a wasteful number, since it uses less digits than its factorization.

764928852840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124802386 (or 2124802379 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 764928852840 in words is "seven hundred sixty-four billion, nine hundred twenty-eight million, eight hundred fifty-two thousand, eight hundred forty".