634877147 has 2 divisors, whose sum is σ = 634877148. Its totient is φ = 634877146.

The previous prime is 634877137. The next prime is 634877183. The reversal of 634877147 is 741778436.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634877147 is a prime.

It is not a weakly prime, because it can be changed into another prime (634877107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317438573 + 317438574.

It is an arithmetic number, because the mean of its divisors is an integer number (317438574).

Almost surely, 2^634877147 is an apocalyptic number.

634877147 is a deficient number, since it is larger than the sum of its proper divisors (1).

634877147 is an equidigital number, since it uses as much as digits as its factorization.

634877147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 47.

The square root of 634877147 is about 25196.7685824988. The cubic root of 634877147 is about 859.4683693717.

The spelling of 634877147 in words is "six hundred thirty-four million, eight hundred seventy-seven thousand, one hundred forty-seven".