630700817 has 2 divisors, whose sum is σ = 630700818. Its totient is φ = 630700816.

The previous prime is 630700783. The next prime is 630700831. The reversal of 630700817 is 718007036.

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., 558093376 + 72607441 = 23624^2 + 8521^2 .

It is a cyclic number.

It is not a de Polignac number, because 630700817 - 2⁶ = 630700753 is a prime.

It is not a weakly prime, because it can be changed into another prime (630703817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315350408 + 315350409.

It is an arithmetic number, because the mean of its divisors is an integer number (315350409).

Almost surely, 2^630700817 is an apocalyptic number.

It is an amenable number.

630700817 is a deficient number, since it is larger than the sum of its proper divisors (1).

630700817 is an equidigital number, since it uses as much as digits as its factorization.

630700817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 630700817 is about 25113.7575245123. The cubic root of 630700817 is about 857.5796454113.

The spelling of 630700817 in words is "six hundred thirty million, seven hundred thousand, eight hundred seventeen".