628861598 has 32 divisors (see below), whose sum is σ = 1009594368. Its totient is φ = 293277600.

The previous prime is 628861553. The next prime is 628861609. The reversal of 628861598 is 895168826.

It is a super-2 number, since 2×628861598² = 790933818878227208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193628 + ... + 196848.

It is an arithmetic number, because the mean of its divisors is an integer number (31549824).

Almost surely, 2^628861598 is an apocalyptic number.

628861598 is a deficient number, since it is larger than the sum of its proper divisors (380732770).

628861598 is a wasteful number, since it uses less digits than its factorization.

628861598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368.

The product of its digits is 1658880, while the sum is 53.

The square root of 628861598 is about 25077.1130316071. The cubic root of 628861598 is about 856.7452231218.

The spelling of 628861598 in words is "six hundred twenty-eight million, eight hundred sixty-one thousand, five hundred ninety-eight".