634079166 has 16 divisors (see below), whose sum is σ = 1449323904. Its totient is φ = 181165464.

The previous prime is 634079143. The next prime is 634079179. The reversal of 634079166 is 661970436.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 15097123 = 634079166 / (6 + 3 + 4 + 0 + 7 + 9 + 1 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7548520 + ... + 7548603.

It is an arithmetic number, because the mean of its divisors is an integer number (90582744).

Almost surely, 2^634079166 is an apocalyptic number.

634079166 is an abundant number, since it is smaller than the sum of its proper divisors (815244738).

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

634079166 is a wasteful number, since it uses less digits than its factorization.

634079166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15097135.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 634079166 is about 25180.9286167131. The cubic root of 634079166 is about 859.1081280357.

The spelling of 634079166 in words is "six hundred thirty-four million, seventy-nine thousand, one hundred sixty-six".