630758977 has 2 divisors, whose sum is σ = 630758978. Its totient is φ = 630758976.

The previous prime is 630758899. The next prime is 630758983. The reversal of 630758977 is 779857036.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624200256 + 6558721 = 24984^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 630758977 - 2²⁷ = 496541249 is a prime.

It is not a weakly prime, because it can be changed into another prime (630758077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315379488 + 315379489.

It is an arithmetic number, because the mean of its divisors is an integer number (315379489).

Almost surely, 2^630758977 is an apocalyptic number.

It is an amenable number.

630758977 is a deficient number, since it is larger than the sum of its proper divisors (1).

630758977 is an equidigital number, since it uses as much as digits as its factorization.

630758977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The square root of 630758977 is about 25114.9154288841. The cubic root of 630758977 is about 857.6060051357.

The spelling of 630758977 in words is "six hundred thirty million, seven hundred fifty-eight thousand, nine hundred seventy-seven".