630877801 has 2 divisors, whose sum is σ = 630877802. Its totient is φ = 630877800.

The previous prime is 630877789. The next prime is 630877823. The reversal of 630877801 is 108778036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317552400 + 313325401 = 17820^2 + 17701^2 .

It is a cyclic number.

It is not a de Polignac number, because 630877801 - 2¹⁷ = 630746729 is a prime.

It is equal to p_32850499 and since 630877801 and 32850499 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 (630887801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315438900 + 315438901.

It is an arithmetic number, because the mean of its divisors is an integer number (315438901).

Almost surely, 2^630877801 is an apocalyptic number.

It is an amenable number.

630877801 is a deficient number, since it is larger than the sum of its proper divisors (1).

630877801 is an equidigital number, since it uses as much as digits as its factorization.

630877801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 630877801 is about 25117.2809236987. The cubic root of 630877801 is about 857.6598544301.

The spelling of 630877801 in words is "six hundred thirty million, eight hundred seventy-seven thousand, eight hundred one".