628799023 has 2 divisors, whose sum is σ = 628799024. Its totient is φ = 628799022.

The previous prime is 628798997. The next prime is 628799051. The reversal of 628799023 is 320997826.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628799023 is a prime.

It is a super-2 number, since 2×628799023² = 790776422651509058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628799123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314399511 + 314399512.

It is an arithmetic number, because the mean of its divisors is an integer number (314399512).

Almost surely, 2^628799023 is an apocalyptic number.

628799023 is a deficient number, since it is larger than the sum of its proper divisors (1).

628799023 is an equidigital number, since it uses as much as digits as its factorization.

628799023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 628799023 is about 25075.8653489765. The cubic root of 628799023 is about 856.7168053105.

The spelling of 628799023 in words is "six hundred twenty-eight million, seven hundred ninety-nine thousand, twenty-three".