635471968 has 48 divisors (see below), whose sum is σ = 1382300640. Its totient is φ = 286038016.

The previous prime is 635471959. The next prime is 635471981. The reversal of 635471968 is 869174536.

It is a super-2 number, since 2×635471968² = 807649244227586048, which contains 22 as substring.

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, 12883 + ... + 37906.

It is an arithmetic number, because the mean of its divisors is an integer number (28797930).

Almost surely, 2^635471968 is an apocalyptic number.

635471968 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

635471968 is an abundant number, since it is smaller than the sum of its proper divisors (746828672).

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

635471968 is a wasteful number, since it uses less digits than its factorization.

635471968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50839 (or 50831 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 635471968 is about 25208.5693366363. The cubic root of 635471968 is about 859.7366996369.

The spelling of 635471968 in words is "six hundred thirty-five million, four hundred seventy-one thousand, nine hundred sixty-eight".