764740026 has 12 divisors (see below), whose sum is σ = 1656936762. Its totient is φ = 254913336.

The previous prime is 764740007. The next prime is 764740027. The reversal of 764740026 is 620047467.

764740026 is a `hidden beast` number, since 7 + 647 + 4 + 0 + 0 + 2 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 409455225 + 355284801 = 20235^2 + 18849^2 .

It is not an unprimeable number, because it can be changed into a prime (764740027) 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, 21242761 + ... + 21242796.

Almost surely, 2^764740026 is an apocalyptic number.

764740026 is an abundant number, since it is smaller than the sum of its proper divisors (892196736).

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

764740026 is a wasteful number, since it uses less digits than its factorization.

764740026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42485565 (or 42485562 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 764740026 is about 27653.9332826273. The cubic root of 764740026 is about 914.4738137427.

The spelling of 764740026 in words is "seven hundred sixty-four million, seven hundred forty thousand, twenty-six".