6654631680 has 144 divisors (see below), whose sum is σ = 23614822560. Its totient is φ = 1774559232.

The previous prime is 6654631679. The next prime is 6654631741. The reversal of 6654631680 is 861364566.

6654631680 is a `hidden beast` number, since 6 + 6 + 5 + 4 + 631 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61717 + ... + 130836.

Almost surely, 2^6654631680 is an apocalyptic number.

6654631680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6654631680 is an abundant number, since it is smaller than the sum of its proper divisors (16960190880).

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

6654631680 is a wasteful number, since it uses less digits than its factorization.

6654631680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192583 (or 192563 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6654631680 is about 81575.9258605135. The cubic root of 6654631680 is about 1880.9388399692.

The spelling of 6654631680 in words is "six billion, six hundred fifty-four million, six hundred thirty-one thousand, six hundred eighty".