628474 has 36 divisors (see below), whose sum is σ = 1228122. Its totient is φ = 240240.

The previous prime is 628447. The next prime is 628477. The reversal of 628474 is 474826.

It can be written as a sum of positive squares in only one way, i.e., 480249 + 148225 = 693^2 + 385^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (628477) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11832 + ... + 11884.

2⁶²⁸⁴⁷⁴ is an apocalyptic number.

628474 is a deficient number, since it is larger than the sum of its proper divisors (599648).

628474 is a wasteful number, since it uses less digits than its factorization.

628474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 73 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 628474 is about 792.7635208560. The cubic root of 628474 is about 85.6569169025.

The spelling of 628474 in words is "six hundred twenty-eight thousand, four hundred seventy-four".