628424901 has 24 divisors (see below), whose sum is σ = 1009089536. Its totient is φ = 374245920.

The previous prime is 628424897. The next prime is 628424903. The reversal of 628424901 is 109424826.

628424901 is a `hidden beast` number, since 628 + 4 + 24 + 9 + 0 + 1 = 666.

It is not a de Polignac number, because 628424901 - 2² = 628424897 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628424903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83005 + ... + 90258.

Almost surely, 2^628424901 is an apocalyptic number.

It is an amenable number.

628424901 is a deficient number, since it is larger than the sum of its proper divisors (380664635).

628424901 is a wasteful number, since it uses less digits than its factorization.

628424901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173313 (or 173310 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 628424901 is about 25068.4044366609. The cubic root of 628424901 is about 856.5468621963.

The spelling of 628424901 in words is "six hundred twenty-eight million, four hundred twenty-four thousand, nine hundred one".