630759431 has 2 divisors, whose sum is σ = 630759432. Its totient is φ = 630759430.

The previous prime is 630759421. The next prime is 630759439. The reversal of 630759431 is 134957036.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-630759431 is a prime.

It is a super-2 number, since 2×630759431² = 795714919590887522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630759439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315379715 + 315379716.

It is an arithmetic number, because the mean of its divisors is an integer number (315379716).

Almost surely, 2^630759431 is an apocalyptic number.

630759431 is a deficient number, since it is larger than the sum of its proper divisors (1).

630759431 is an equidigital number, since it uses as much as digits as its factorization.

630759431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 630759431 is about 25114.9244673362. The cubic root of 630759431 is about 857.6062108947.

The spelling of 630759431 in words is "six hundred thirty million, seven hundred fifty-nine thousand, four hundred thirty-one".