463631643 has 6 divisors (see below), whose sum is σ = 669690164. Its totient is φ = 309087756.

The previous prime is 463631639. The next prime is 463631653. The reversal of 463631643 is 346136364.

463631643 is a `hidden beast` number, since 4 + 6 + 3 + 6 + 3 + 1 + 643 = 666.

It is not a de Polignac number, because 463631643 - 2² = 463631639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 463631598 and 463631607.

It is not an unprimeable number, because it can be changed into a prime (463631653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25757305 + ... + 25757322.

Almost surely, 2^463631643 is an apocalyptic number.

463631643 is a deficient number, since it is larger than the sum of its proper divisors (206058521).

463631643 is a wasteful number, since it uses less digits than its factorization.

463631643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51514633 (or 51514630 counting only the distinct ones).

The product of its digits is 93312, while the sum is 36.

The square root of 463631643 is about 21532.1072586963. The cubic root of 463631643 is about 773.9704082992.

The spelling of 463631643 in words is "four hundred sixty-three million, six hundred thirty-one thousand, six hundred forty-three".