6669873654 has 16 divisors (see below), whose sum is σ = 13565845440. Its totient is φ = 2185608200.

The previous prime is 6669873643. The next prime is 6669873667. The reversal of 6669873654 is 4563789666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9420372 + ... + 9421079.

It is an arithmetic number, because the mean of its divisors is an integer number (847865340).

Almost surely, 2^6669873654 is an apocalyptic number.

6669873654 is an abundant number, since it is smaller than the sum of its proper divisors (6895971786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6669873654 is a wasteful number, since it uses less digits than its factorization.

6669873654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18841515.

The product of its digits is 39191040, while the sum is 60.

The square root of 6669873654 is about 81669.2944379955. The cubic root of 6669873654 is about 1882.3737984458.

It can be divided in two parts, 66 and 69873654, that multiplied together give a palindrome (4611661164).

The spelling of 6669873654 in words is "six billion, six hundred sixty-nine million, eight hundred seventy-three thousand, six hundred fifty-four".