628774 has 8 divisors (see below), whose sum is σ = 984240. Its totient is φ = 300696.

The previous prime is 628759. The next prime is 628781. The reversal of 628774 is 477826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6789 + ... + 6880.

It is an arithmetic number, because the mean of its divisors is an integer number (123030).

2⁶²⁸⁷⁷⁴ is an apocalyptic number.

628774 is a deficient number, since it is larger than the sum of its proper divisors (355466).

628774 is a wasteful number, since it uses less digits than its factorization.

628774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13694.

The product of its digits is 18816, while the sum is 34.

The square root of 628774 is about 792.9527098131. The cubic root of 628774 is about 85.6705440837.

It can be divided in two parts, 62 and 8774, that added together give a square (8836 = 94²).

The spelling of 628774 in words is "six hundred twenty-eight thousand, seven hundred seventy-four".