629391528964 has 27 divisors (see below), whose sum is σ = 1210701989973. Its totient is φ = 286079125200.

The previous prime is 629391528919. The next prime is 629391528967. The reversal of 629391528964 is 469825193926.

The square root of 629391528964 is 793342.

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

It can be written as a sum of positive squares in only one way, i.e., 163667175364 + 465724353600 = 404558^2 + 682440^2 .

It is a super-2 number, since 2×629391528964² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 629391528896 and 629391528905.

It is not an unprimeable number, because it can be changed into a prime (629391528967) 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 8 ways as a sum of consecutive naturals, for example, 17435494 + ... + 17471554.

Almost surely, 2^629391528964 is an apocalyptic number.

629391528964 is the 793342-nd square number.

It is an amenable number.

629391528964 is a deficient number, since it is larger than the sum of its proper divisors (581310461009).

629391528964 is an frugal number, since it uses more digits than its factorization.

629391528964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72148 (or 36074 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 64.

Multiplying 629391528964 by its sum of digits (64), we get a square (40281057853696 = 6346736²).

The spelling of 629391528964 in words is "six hundred twenty-nine billion, three hundred ninety-one million, five hundred twenty-eight thousand, nine hundred sixty-four".