764076561 has 8 divisors (see below), whose sum is σ = 1051632384. Its totient is φ = 492952560.

The previous prime is 764076539. The next prime is 764076571. The reversal of 764076561 is 165670467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 764076561 - 2⁶ = 764076497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764076571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4107846 + ... + 4108031.

It is an arithmetic number, because the mean of its divisors is an integer number (131454048).

Almost surely, 2^764076561 is an apocalyptic number.

It is an amenable number.

764076561 is a deficient number, since it is larger than the sum of its proper divisors (287555823).

764076561 is a wasteful number, since it uses less digits than its factorization.

764076561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8215911.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 764076561 is about 27641.9348273597. The cubic root of 764076561 is about 914.2092807465.

The spelling of 764076561 in words is "seven hundred sixty-four million, seventy-six thousand, five hundred sixty-one".