647434134 has 24 divisors (see below), whose sum is σ = 1454729640. Its totient is φ = 215811216.

The previous prime is 647434111. The next prime is 647434211. The reversal of 647434134 is 431434746.

647434134 is a `hidden beast` number, since 647 + 4 + 3 + 4 + 1 + 3 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 665599 + ... + 666570.

It is an arithmetic number, because the mean of its divisors is an integer number (60613735).

Almost surely, 2^647434134 is an apocalyptic number.

647434134 is an abundant number, since it is smaller than the sum of its proper divisors (807295506).

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

647434134 is a wasteful number, since it uses less digits than its factorization.

647434134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332186 (or 1332174 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 647434134 is about 25444.7270372468. The cubic root of 647434134 is about 865.0977799407.

The spelling of 647434134 in words is "six hundred forty-seven million, four hundred thirty-four thousand, one hundred thirty-four".