6454661631 has 24 divisors (see below), whose sum is σ = 9785937840. Its totient is φ = 3777016320.

The previous prime is 6454661623. The next prime is 6454661639. The reversal of 6454661631 is 1361664546.

It is an interprime number because it is at equal distance from previous prime (6454661623) and next prime (6454661639).

It is not a de Polignac number, because 6454661631 - 2³ = 6454661623 is a prime.

It is a super-2 number, since 2×6454661631² = 83325313541407160322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6454661639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296050 + ... + 317103.

It is an arithmetic number, because the mean of its divisors is an integer number (407747410).

Almost surely, 2^6454661631 is an apocalyptic number.

6454661631 is a deficient number, since it is larger than the sum of its proper divisors (3331276209).

6454661631 is a wasteful number, since it uses less digits than its factorization.

6454661631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613207 (or 613196 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 6454661631 is about 80340.9088260769. The cubic root of 6454661631 is about 1861.9063230792.

The spelling of 6454661631 in words is "six billion, four hundred fifty-four million, six hundred sixty-one thousand, six hundred thirty-one".