628874 has 8 divisors (see below), whose sum is σ = 954180. Its totient is φ = 310816.

The previous prime is 628861. The next prime is 628877. The reversal of 628874 is 478826.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 25 = 793^2 + 5^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (628877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1589 + ... + 1944.

2⁶²⁸⁸⁷⁴ is an apocalyptic number.

628874 is a deficient number, since it is larger than the sum of its proper divisors (325306).

628874 is a wasteful number, since it uses less digits than its factorization.

628874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

The product of its digits is 21504, while the sum is 35.

The square root of 628874 is about 793.0157627689. The cubic root of 628874 is about 85.6750855142.

The spelling of 628874 in words is "six hundred twenty-eight thousand, eight hundred seventy-four".