634372723 has 2 divisors, whose sum is σ = 634372724. Its totient is φ = 634372722.

The previous prime is 634372649. The next prime is 634372759. The reversal of 634372723 is 327273436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634372723 is a prime.

It is not a weakly prime, because it can be changed into another prime (634672723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317186361 + 317186362.

It is an arithmetic number, because the mean of its divisors is an integer number (317186362).

Almost surely, 2^634372723 is an apocalyptic number.

634372723 is a deficient number, since it is larger than the sum of its proper divisors (1).

634372723 is an equidigital number, since it uses as much as digits as its factorization.

634372723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 37.

The square root of 634372723 is about 25186.7568972268. The cubic root of 634372723 is about 859.2406868226.

The spelling of 634372723 in words is "six hundred thirty-four million, three hundred seventy-two thousand, seven hundred twenty-three".