634476647 has 12 divisors (see below), whose sum is σ = 745378056. Its totient is φ = 538448400.

The previous prime is 634476637. The next prime is 634476649. The reversal of 634476647 is 746674436.

It is a happy number.

634476647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 634476647 - 2⁸ = 634476391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634476649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59153 + ... + 69050.

It is an arithmetic number, because the mean of its divisors is an integer number (62114838).

Almost surely, 2^634476647 is an apocalyptic number.

634476647 is a deficient number, since it is larger than the sum of its proper divisors (110901409).

634476647 is a wasteful number, since it uses less digits than its factorization.

634476647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128318 (or 128311 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 47.

The square root of 634476647 is about 25188.8198810504. The cubic root of 634476647 is about 859.2876050092.

The spelling of 634476647 in words is "six hundred thirty-four million, four hundred seventy-six thousand, six hundred forty-seven".