764500989 has 12 divisors (see below), whose sum is σ = 1185756864. Its totient is φ = 436857624.

The previous prime is 764500943. The next prime is 764501029. The reversal of 764500989 is 989005467.

It is not a de Polignac number, because 764500989 - 2¹² = 764496893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764500939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2600197 + ... + 2600490.

It is an arithmetic number, because the mean of its divisors is an integer number (98813072).

Almost surely, 2^764500989 is an apocalyptic number.

It is an amenable number.

764500989 is a deficient number, since it is larger than the sum of its proper divisors (421255875).

764500989 is a wasteful number, since it uses less digits than its factorization.

764500989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200704 (or 5200697 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 764500989 is about 27649.6110099220. The cubic root of 764500989 is about 914.3785239060.

The spelling of 764500989 in words is "seven hundred sixty-four million, five hundred thousand, nine hundred eighty-nine".