764736258064 has 15 divisors (see below), whose sum is σ = 1481683277343. Its totient is φ = 382366380048.

The previous prime is 764736258061. The next prime is 764736258119. The reversal of 764736258064 is 460852637467.

The square root of 764736258064 is 874492.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764736258061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3388657 + ... + 3607279.

Almost surely, 2^764736258064 is an apocalyptic number.

764736258064 is the 874492-nd square number.

It is an amenable number.

764736258064 is a deficient number, since it is larger than the sum of its proper divisors (716947019279).

764736258064 is an frugal number, since it uses more digits than its factorization.

764736258064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437254 (or 218625 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 58.

The spelling of 764736258064 in words is "seven hundred sixty-four billion, seven hundred thirty-six million, two hundred fifty-eight thousand, sixty-four".