634335556 has 12 divisors (see below), whose sum is σ = 1124139520. Its totient is φ = 313152840.

The previous prime is 634335553. The next prime is 634335563. The reversal of 634335556 is 655533436.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (634335553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003380 + ... + 1004011.

Almost surely, 2^634335556 is an apocalyptic number.

It is an amenable number.

634335556 is a deficient number, since it is larger than the sum of its proper divisors (489803964).

634335556 is a wasteful number, since it uses less digits than its factorization.

634335556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007474 (or 2007472 counting only the distinct ones).

The product of its digits is 486000, while the sum is 40.

The square root of 634335556 is about 25186.0190581997. The cubic root of 634335556 is about 859.2239059296.

The spelling of 634335556 in words is "six hundred thirty-four million, three hundred thirty-five thousand, five hundred fifty-six".