620286628 has 12 divisors (see below), whose sum is σ = 1169001820. Its totient is φ = 286286112.

The previous prime is 620286619. The next prime is 620286661. The reversal of 620286628 is 826682026.

It can be written as a sum of positive squares in 2 ways, for example, as 380718144 + 239568484 = 19512^2 + 15478^2 .

It is a super-2 number, since 2×620286628² = 769511001751220768, which contains 22 as substring.

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, 5964243 + ... + 5964346.

Almost surely, 2^620286628 is an apocalyptic number.

It is an amenable number.

620286628 is a deficient number, since it is larger than the sum of its proper divisors (548715192).

620286628 is a wasteful number, since it uses less digits than its factorization.

620286628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928606 (or 11928604 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 620286628 is about 24905.5541596649. The cubic root of 620286628 is about 852.8332803635.

The spelling of 620286628 in words is "six hundred twenty million, two hundred eighty-six thousand, six hundred twenty-eight".