634463731 has 4 divisors (see below), whose sum is σ = 692142264. Its totient is φ = 576785200.

The previous prime is 634463729. The next prime is 634463741. The reversal of 634463731 is 137364436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634463731 - 2¹ = 634463729 is a prime.

It is a super-2 number, since 2×634463731² = 805088451908880722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634463741) 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, 28839250 + ... + 28839271.

It is an arithmetic number, because the mean of its divisors is an integer number (173035566).

Almost surely, 2^634463731 is an apocalyptic number.

634463731 is a deficient number, since it is larger than the sum of its proper divisors (57678533).

634463731 is a wasteful number, since it uses less digits than its factorization.

634463731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57678532.

The product of its digits is 108864, while the sum is 37.

The square root of 634463731 is about 25188.5634961583. The cubic root of 634463731 is about 859.2817741490.

The spelling of 634463731 in words is "six hundred thirty-four million, four hundred sixty-three thousand, seven hundred thirty-one".