66100873 has 8 divisors (see below), whose sum is σ = 69204096. Its totient is φ = 63016800.

The previous prime is 66100871. The next prime is 66100877. The reversal of 66100873 is 37800166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66100873 - 2¹ = 66100871 is a prime.

It is a super-2 number, since 2×66100873² = 8738650822724258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66100871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2533 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (8650512).

Almost surely, 2^66100873 is an apocalyptic number.

It is an amenable number.

66100873 is a deficient number, since it is larger than the sum of its proper divisors (3103223).

66100873 is a wasteful number, since it uses less digits than its factorization.

66100873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9575.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 66100873 is about 8130.2443382718. The cubic root of 66100873 is about 404.3297821120.

The spelling of 66100873 in words is "sixty-six million, one hundred thousand, eight hundred seventy-three".