634697196 has 36 divisors (see below), whose sum is σ = 1722751128. Its totient is φ = 181341888.

The previous prime is 634697191. The next prime is 634697233. The reversal of 634697196 is 691796436.

It is a super-2 number, since 2×634697196² = 805681061220524832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634697191) 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 in 11 ways as a sum of consecutive naturals, for example, 539121 + ... + 540296.

It is an arithmetic number, because the mean of its divisors is an integer number (47854198).

Almost surely, 2^634697196 is an apocalyptic number.

It is an amenable number.

634697196 is an abundant number, since it is smaller than the sum of its proper divisors (1088053932).

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

634697196 is a wasteful number, since it uses less digits than its factorization.

634697196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079438 (or 1079429 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The square root of 634697196 is about 25193.1974151754. The cubic root of 634697196 is about 859.3871584854.

The spelling of 634697196 in words is "six hundred thirty-four million, six hundred ninety-seven thousand, one hundred ninety-six".