66192885 has 24 divisors (see below), whose sum is σ = 125165664. Its totient is φ = 32093280.

The previous prime is 66192881. The next prime is 66192899. The reversal of 66192885 is 58829166.

66192885 is a `hidden beast` number, since 6 + 619 + 28 + 8 + 5 = 666.

It is not a de Polignac number, because 66192885 - 2² = 66192881 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66192885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66192881) 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, 66367 + ... + 67356.

It is an arithmetic number, because the mean of its divisors is an integer number (5215236).

Almost surely, 2^66192885 is an apocalyptic number.

It is an amenable number.

66192885 is a deficient number, since it is larger than the sum of its proper divisors (58972779).

66192885 is a wasteful number, since it uses less digits than its factorization.

66192885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133745 (or 133742 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 66192885 is about 8135.9009949728. The cubic root of 66192885 is about 404.5173033017.

The spelling of 66192885 in words is "sixty-six million, one hundred ninety-two thousand, eight hundred eighty-five".