634704018 has 16 divisors (see below), whose sum is σ = 1367054976. Its totient is φ = 195293520.

The previous prime is 634704017. The next prime is 634704019. The reversal of 634704018 is 810407436.

It is an interprime number because it is at equal distance from previous prime (634704017) and next prime (634704019).

It is a self number, because there is not a number n which added to its sum of digits gives 634704018.

It is not an unprimeable number, because it can be changed into a prime (634704017) 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 in 7 ways as a sum of consecutive naturals, for example, 4068538 + ... + 4068693.

It is an arithmetic number, because the mean of its divisors is an integer number (85440936).

Almost surely, 2^634704018 is an apocalyptic number.

634704018 is an abundant number, since it is smaller than the sum of its proper divisors (732350958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634704018 is a wasteful number, since it uses less digits than its factorization.

634704018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8137249.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 634704018 is about 25193.3328085031. The cubic root of 634704018 is about 859.3902374960.

The spelling of 634704018 in words is "six hundred thirty-four million, seven hundred four thousand, eighteen".