764464636 has 48 divisors (see below), whose sum is σ = 1528752960. Its totient is φ = 331361280.

The previous prime is 764464609. The next prime is 764464637. The reversal of 764464636 is 636464467.

It is a super-2 number, since 2×764464636² = 1168812359389224992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764464637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 811926 + ... + 812866.

It is an arithmetic number, because the mean of its divisors is an integer number (31849020).

Almost surely, 2^764464636 is an apocalyptic number.

It is an amenable number.

764464636 is a deficient number, since it is larger than the sum of its proper divisors (764288324).

764464636 is a wasteful number, since it uses less digits than its factorization.

764464636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894 (or 1892 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 46.

The square root of 764464636 is about 27648.9536149200. The cubic root of 764464636 is about 914.3640303868.

The spelling of 764464636 in words is "seven hundred sixty-four million, four hundred sixty-four thousand, six hundred thirty-six".