629489664 has 120 divisors (see below), whose sum is σ = 1866408320. Its totient is φ = 209682432.

The previous prime is 629489647. The next prime is 629489669. The reversal of 629489664 is 466984926.

629489664 is a `hidden beast` number, since 629 + 4 + 8 + 9 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 629489664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629489669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441657 + ... + 443079.

Almost surely, 2^629489664 is an apocalyptic number.

629489664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 629489664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933204160).

629489664 is an abundant number, since it is smaller than the sum of its proper divisors (1236918656).

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

629489664 is an equidigital number, since it uses as much as digits as its factorization.

629489664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460 (or 1428 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 629489664 is about 25089.6325999406. The cubic root of 629489664 is about 857.0303486614.

The spelling of 629489664 in words is "six hundred twenty-nine million, four hundred eighty-nine thousand, six hundred sixty-four".