634684670 has 16 divisors (see below), whose sum is σ = 1142905680. Its totient is φ = 253768704.

The previous prime is 634684667. The next prime is 634684679. The reversal of 634684670 is 76486436.

It is a happy number.

It is a super-3 number, since 3×634684670³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634684679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15089 + ... + 38691.

It is an arithmetic number, because the mean of its divisors is an integer number (71431605).

Almost surely, 2^634684670 is an apocalyptic number.

634684670 is a deficient number, since it is larger than the sum of its proper divisors (508221010).

634684670 is a wasteful number, since it uses less digits than its factorization.

634684670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26299.

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 634684670 is about 25192.9488150951. The cubic root of 634684670 is about 859.3815049998.

The spelling of 634684670 in words is "six hundred thirty-four million, six hundred eighty-four thousand, six hundred seventy".