66370875 has 16 divisors (see below), whose sum is σ = 110441760. Its totient is φ = 35397600.

The previous prime is 66370807. The next prime is 66370877. The reversal of 66370875 is 57807366.

It is not a de Polignac number, because 66370875 - 2¹³ = 66362683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66370877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88120 + ... + 88869.

It is an arithmetic number, because the mean of its divisors is an integer number (6902610).

Almost surely, 2^66370875 is an apocalyptic number.

66370875 is a deficient number, since it is larger than the sum of its proper divisors (44070885).

66370875 is a wasteful number, since it uses less digits than its factorization.

66370875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177007 (or 176997 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 66370875 is about 8146.8322064469. The cubic root of 66370875 is about 404.8795557099.

The spelling of 66370875 in words is "sixty-six million, three hundred seventy thousand, eight hundred seventy-five".