628664700 has 72 divisors (see below), whose sum is σ = 1829601648. Its totient is φ = 166661120.

The previous prime is 628664683. The next prime is 628664713. The reversal of 628664700 is 7466826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45844 + ... + 57956.

It is an arithmetic number, because the mean of its divisors is an integer number (25411134).

Almost surely, 2^628664700 is an apocalyptic number.

628664700 is a gapful number since it is divisible by the number (60) 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 628664700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914800824).

628664700 is an abundant number, since it is smaller than the sum of its proper divisors (1200936948).

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

628664700 is a wasteful number, since it uses less digits than its factorization.

628664700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12303 (or 12296 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 628664700 is about 25073.1868736306. The cubic root of 628664700 is about 856.6557974938.

The spelling of 628664700 in words is "six hundred twenty-eight million, six hundred sixty-four thousand, seven hundred".