6657164388 has 48 divisors (see below), whose sum is σ = 19724933760. Its totient is φ = 1902046752.

The previous prime is 6657164377. The next prime is 6657164399. The reversal of 6657164388 is 8834617566.

6657164388 is a `hidden beast` number, since 6 + 6 + 571 + 64 + 3 + 8 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (6657164377) and next prime (6657164399).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4402131 + ... + 4403642.

It is an arithmetic number, because the mean of its divisors is an integer number (410936120).

Almost surely, 2^6657164388 is an apocalyptic number.

It is an amenable number.

6657164388 is an abundant number, since it is smaller than the sum of its proper divisors (13067769372).

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

6657164388 is a wasteful number, since it uses less digits than its factorization.

6657164388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805793 (or 8805785 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 6657164388 is about 81591.4480077416. The cubic root of 6657164388 is about 1881.1774339209.

The spelling of 6657164388 in words is "six billion, six hundred fifty-seven million, one hundred sixty-four thousand, three hundred eighty-eight".