627420977 has 2 divisors, whose sum is σ = 627420978. Its totient is φ = 627420976.

The previous prime is 627420973. The next prime is 627421013. The reversal of 627420977 is 779024726.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587529121 + 39891856 = 24239^2 + 6316^2 .

It is a cyclic number.

It is not a de Polignac number, because 627420977 - 2² = 627420973 is a prime.

It is equal to p_32679917 and since 627420977 and 32679917 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (627420973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313710488 + 313710489.

It is an arithmetic number, because the mean of its divisors is an integer number (313710489).

Almost surely, 2^627420977 is an apocalyptic number.

It is an amenable number.

627420977 is a deficient number, since it is larger than the sum of its proper divisors (1).

627420977 is an equidigital number, since it uses as much as digits as its factorization.

627420977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 627420977 is about 25048.3727415575. The cubic root of 627420977 is about 856.0905009745.

The spelling of 627420977 in words is "six hundred twenty-seven million, four hundred twenty thousand, nine hundred seventy-seven".