628084931 has 2 divisors, whose sum is σ = 628084932. Its totient is φ = 628084930.

The previous prime is 628084903. The next prime is 628084939. The reversal of 628084931 is 139480826.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 628084931 - 2¹⁸ = 627822787 is a prime.

It is a super-2 number, since 2×628084931² = 788981361098549522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (628084939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314042465 + 314042466.

It is an arithmetic number, because the mean of its divisors is an integer number (314042466).

Almost surely, 2^628084931 is an apocalyptic number.

628084931 is a deficient number, since it is larger than the sum of its proper divisors (1).

628084931 is an equidigital number, since it uses as much as digits as its factorization.

628084931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 628084931 is about 25061.6226729236. The cubic root of 628084931 is about 856.3923739597.

The spelling of 628084931 in words is "six hundred twenty-eight million, eighty-four thousand, nine hundred thirty-one".