653263673 has 2 divisors, whose sum is σ = 653263674. Its totient is φ = 653263672.

The previous prime is 653263661. The next prime is 653263691. The reversal of 653263673 is 376362356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515834944 + 137428729 = 22712^2 + 11723^2 .

It is a cyclic number.

It is not a de Polignac number, because 653263673 - 2¹⁸ = 653001529 is a prime.

It is a super-2 number, since 2×653263673² = 853506852922901858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 653263673.

It is not a weakly prime, because it can be changed into another prime (653263603) 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, 326631836 + 326631837.

It is an arithmetic number, because the mean of its divisors is an integer number (326631837).

Almost surely, 2^653263673 is an apocalyptic number.

It is an amenable number.

653263673 is a deficient number, since it is larger than the sum of its proper divisors (1).

653263673 is an equidigital number, since it uses as much as digits as its factorization.

653263673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 41.

The square root of 653263673 is about 25559.0233185856. The cubic root of 653263673 is about 867.6864913115.

The spelling of 653263673 in words is "six hundred fifty-three million, two hundred sixty-three thousand, six hundred seventy-three".