634561476 has 24 divisors (see below), whose sum is σ = 1512147840. Its totient is φ = 207019872.

The previous prime is 634561463. The next prime is 634561481. The reversal of 634561476 is 674165436.

It is an alternating number because its digits alternate between even and odd.

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, 561991 + ... + 563118.

It is an arithmetic number, because the mean of its divisors is an integer number (63006160).

Almost surely, 2^634561476 is an apocalyptic number.

It is an amenable number.

634561476 is an abundant number, since it is smaller than the sum of its proper divisors (877586364).

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

634561476 is a wasteful number, since it uses less digits than its factorization.

634561476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125163 (or 1125161 counting only the distinct ones).

The product of its digits is 362880, while the sum is 42.

The square root of 634561476 is about 25190.5036869055. The cubic root of 634561476 is about 859.3258986487.

The spelling of 634561476 in words is "six hundred thirty-four million, five hundred sixty-one thousand, four hundred seventy-six".