634618047 has 32 divisors (see below), whose sum is σ = 1019151360. Its totient is φ = 343411200.

The previous prime is 634618009. The next prime is 634618063. The reversal of 634618047 is 740816436.

It is not a de Polignac number, because 634618047 - 2¹⁰ = 634617023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634617996 and 634618014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634618247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42279 + ... + 55287.

It is an arithmetic number, because the mean of its divisors is an integer number (31848480).

Almost surely, 2^634618047 is an apocalyptic number.

634618047 is a deficient number, since it is larger than the sum of its proper divisors (384533313).

634618047 is a wasteful number, since it uses less digits than its factorization.

634618047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 634618047 is about 25191.6265254945. The cubic root of 634618047 is about 859.3514341209.

The spelling of 634618047 in words is "six hundred thirty-four million, six hundred eighteen thousand, forty-seven".