628974 has 24 divisors (see below), whose sum is σ = 1382472. Its totient is φ = 206640.

The previous prime is 628973. The next prime is 628993. The reversal of 628974 is 479826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628973) 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, 1284 + ... + 1704.

It is an arithmetic number, because the mean of its divisors is an integer number (57603).

2⁶²⁸⁹⁷⁴ is an apocalyptic number.

628974 is an abundant number, since it is smaller than the sum of its proper divisors (753498).

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

628974 is a wasteful number, since it uses less digits than its factorization.

628974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 509 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 628974 is about 793.0788107118. The cubic root of 628974 is about 85.6796264633.

The spelling of 628974 in words is "six hundred twenty-eight thousand, nine hundred seventy-four".