634404416 has 56 divisors (see below), whose sum is σ = 1279428480. Its totient is φ = 312076800.

The previous prime is 634404409. The next prime is 634404431. The reversal of 634404416 is 614404436.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1471721 + ... + 1472151.

Almost surely, 2^634404416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634404416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639714240).

634404416 is an abundant number, since it is smaller than the sum of its proper divisors (645024064).

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

634404416 is a wasteful number, since it uses less digits than its factorization.

634404416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 634404416 is about 25187.3860493700. The cubic root of 634404416 is about 859.2549956880.

The spelling of 634404416 in words is "six hundred thirty-four million, four hundred four thousand, four hundred sixteen".