628500690877 has 2 divisors, whose sum is σ = 628500690878. Its totient is φ = 628500690876.

The previous prime is 628500690869. The next prime is 628500690887. The reversal of 628500690877 is 778096005826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 360943817796 + 267556873081 = 600786^2 + 517259^2 .

It is a cyclic number.

It is not a de Polignac number, because 628500690877 - 2³ = 628500690869 is a prime.

It is a super-2 number, since 2×628500690877² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628500690847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314250345438 + 314250345439.

It is an arithmetic number, because the mean of its divisors is an integer number (314250345439).

Almost surely, 2^628500690877 is an apocalyptic number.

It is an amenable number.

628500690877 is a deficient number, since it is larger than the sum of its proper divisors (1).

628500690877 is an equidigital number, since it uses as much as digits as its factorization.

628500690877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 628500690877 in words is "six hundred twenty-eight billion, five hundred million, six hundred ninety thousand, eight hundred seventy-seven".