626982464 has 56 divisors (see below), whose sum is σ = 1287094200. Its totient is φ = 302800896.

The previous prime is 626982451. The next prime is 626982481. The reversal of 626982464 is 464289626.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 97614400 + 529368064 = 9880^2 + 23008^2 .

It is a super-2 number, since 2×626982464² = 786214020327022592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351944 + ... + 353720.

It is an arithmetic number, because the mean of its divisors is an integer number (22983825).

Almost surely, 2^626982464 is an apocalyptic number.

626982464 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 626982464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643547100).

626982464 is an abundant number, since it is smaller than the sum of its proper divisors (660111736).

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

626982464 is a wasteful number, since it uses less digits than its factorization.

626982464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1975 (or 1965 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 626982464 is about 25039.6178884583. The cubic root of 626982464 is about 855.8910100848.

The spelling of 626982464 in words is "six hundred twenty-six million, nine hundred eighty-two thousand, four hundred sixty-four".