630564653 has 2 divisors, whose sum is σ = 630564654. Its totient is φ = 630564652.

The previous prime is 630564631. The next prime is 630564659. The reversal of 630564653 is 356465036.

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., 619661449 + 10903204 = 24893^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 630564653 - 2²⁴ = 613787437 is a prime.

It is a super-2 number, since 2×630564653² = 795223563226020818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630564659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315282326 + 315282327.

It is an arithmetic number, because the mean of its divisors is an integer number (315282327).

Almost surely, 2^630564653 is an apocalyptic number.

It is an amenable number.

630564653 is a deficient number, since it is larger than the sum of its proper divisors (1).

630564653 is an equidigital number, since it uses as much as digits as its factorization.

630564653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 38.

The square root of 630564653 is about 25111.0464337908. The cubic root of 630564653 is about 857.5179257728.

The spelling of 630564653 in words is "six hundred thirty million, five hundred sixty-four thousand, six hundred fifty-three".