764120844 has 48 divisors (see below), whose sum is σ = 1984076640. Its totient is φ = 254318400.

The previous prime is 764120839. The next prime is 764120849. The reversal of 764120844 is 448021467.

764120844 is a `hidden beast` number, since 7 + 641 + 2 + 0 + 8 + 4 + 4 = 666.

764120844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (764120839) and next prime (764120849).

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

It is a junction number, because it is equal to n+sod(n) for n = 764120799 and 764120808.

It is not an unprimeable number, because it can be changed into a prime (764120849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70662 + ... + 80754.

It is an arithmetic number, because the mean of its divisors is an integer number (41334930).

Almost surely, 2^764120844 is an apocalyptic number.

It is an amenable number.

764120844 is an abundant number, since it is smaller than the sum of its proper divisors (1219955796).

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

764120844 is a wasteful number, since it uses less digits than its factorization.

764120844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10807 (or 10799 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 764120844 is about 27642.7358269763. The cubic root of 764120844 is about 914.2269417810.

The spelling of 764120844 in words is "seven hundred sixty-four million, one hundred twenty thousand, eight hundred forty-four".