6631419987 has 6 divisors (see below), whose sum is σ = 9578717772. Its totient is φ = 4420946652.

The previous prime is 6631419941. The next prime is 6631419997. The reversal of 6631419987 is 7899141366.

6631419987 is a `hidden beast` number, since 66 + 314 + 199 + 87 = 666.

It is not a de Polignac number, because 6631419987 - 2⁷ = 6631419859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6631419997) 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, 368412213 + ... + 368412230.

It is an arithmetic number, because the mean of its divisors is an integer number (1596452962).

Almost surely, 2^6631419987 is an apocalyptic number.

6631419987 is a deficient number, since it is larger than the sum of its proper divisors (2947297785).

6631419987 is a wasteful number, since it uses less digits than its factorization.

6631419987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736824449 (or 736824446 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 6631419987 is about 81433.5310974540. The cubic root of 6631419987 is about 1878.7493556066.

The spelling of 6631419987 in words is "six billion, six hundred thirty-one million, four hundred nineteen thousand, nine hundred eighty-seven".