66274875 has 64 divisors (see below), whose sum is σ = 124675200. Its totient is φ = 34732800.

The previous prime is 66274867. The next prime is 66274909. The reversal of 66274875 is 57847266.

It is not a de Polignac number, because 66274875 - 2³ = 66274867 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 66274875.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246241 + ... + 246509.

It is an arithmetic number, because the mean of its divisors is an integer number (1948050).

Almost surely, 2^66274875 is an apocalyptic number.

66274875 is a deficient number, since it is larger than the sum of its proper divisors (58400325).

66274875 is a wasteful number, since it uses less digits than its factorization.

66274875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 350 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 66274875 is about 8140.9382137442. The cubic root of 66274875 is about 404.6842532151.

The spelling of 66274875 in words is "sixty-six million, two hundred seventy-four thousand, eight hundred seventy-five".