6631403967 has 24 divisors (see below), whose sum is σ = 9912509568. Its totient is φ = 4267584000.

The previous prime is 6631403941. The next prime is 6631403969. The reversal of 6631403967 is 7693041366.

6631403967 is a `hidden beast` number, since 6 + 631 + 4 + 0 + 3 + 9 + 6 + 7 = 666.

It is not a de Polignac number, because 6631403967 - 2⁷ = 6631403839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631403969) 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, 82243 + ... + 141515.

It is an arithmetic number, because the mean of its divisors is an integer number (413021232).

Almost surely, 2^6631403967 is an apocalyptic number.

6631403967 is a deficient number, since it is larger than the sum of its proper divisors (3281105601).

6631403967 is a wasteful number, since it uses less digits than its factorization.

6631403967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59711 (or 59708 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 6631403967 is about 81433.4327349646. The cubic root of 6631403967 is about 1878.7478427286.

The spelling of 6631403967 in words is "six billion, six hundred thirty-one million, four hundred three thousand, nine hundred sixty-seven".