634760653 has 2 divisors, whose sum is σ = 634760654. Its totient is φ = 634760652.

The previous prime is 634760639. The next prime is 634760699. The reversal of 634760653 is 356067436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 610188804 + 24571849 = 24702^2 + 4957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634760653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634760953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317380326 + 317380327.

It is an arithmetic number, because the mean of its divisors is an integer number (317380327).

Almost surely, 2^634760653 is an apocalyptic number.

It is an amenable number.

634760653 is a deficient number, since it is larger than the sum of its proper divisors (1).

634760653 is an equidigital number, since it uses as much as digits as its factorization.

634760653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 40.

The square root of 634760653 is about 25194.4567911277. The cubic root of 634760653 is about 859.4157980287.

The spelling of 634760653 in words is "six hundred thirty-four million, seven hundred sixty thousand, six hundred fifty-three".