629770464 has 72 divisors (see below), whose sum is σ = 1857262680. Its totient is φ = 209920896.

The previous prime is 629770459. The next prime is 629770469. The reversal of 629770464 is 464077926.

It is an interprime number because it is at equal distance from previous prime (629770459) and next prime (629770469).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×629770464² = 793221674653550592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629770469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32719 + ... + 48270.

It is an arithmetic number, because the mean of its divisors is an integer number (25795315).

Almost surely, 2^629770464 is an apocalyptic number.

It is an amenable number.

629770464 is an abundant number, since it is smaller than the sum of its proper divisors (1227492216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

629770464 is an equidigital number, since it uses as much as digits as its factorization.

629770464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81014 (or 80994 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The square root of 629770464 is about 25095.2279128921. The cubic root of 629770464 is about 857.1577631693.

The spelling of 629770464 in words is "six hundred twenty-nine million, seven hundred seventy thousand, four hundred sixty-four".