66575474 has 16 divisors (see below), whose sum is σ = 118065600. Its totient is φ = 27548304.

The previous prime is 66575441. The next prime is 66575477. The reversal of 66575474 is 47457566.

It is not an unprimeable number, because it can be changed into a prime (66575477) 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, 81584 + ... + 82395.

It is an arithmetic number, because the mean of its divisors is an integer number (7379100).

Almost surely, 2^66575474 is an apocalyptic number.

66575474 is a deficient number, since it is larger than the sum of its proper divisors (51490126).

66575474 is a wasteful number, since it uses less digits than its factorization.

66575474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164017.

The product of its digits is 705600, while the sum is 44.

The square root of 66575474 is about 8159.3795107226. The cubic root of 66575474 is about 405.2951646007.

The spelling of 66575474 in words is "sixty-six million, five hundred seventy-five thousand, four hundred seventy-four".