66474275 has 12 divisors (see below), whose sum is σ = 94203792. Its totient is φ = 45582240.

The previous prime is 66474263. The next prime is 66474283. The reversal of 66474275 is 57247466.

It is not a de Polignac number, because 66474275 - 2⁶ = 66474211 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189752 + ... + 190101.

It is an arithmetic number, because the mean of its divisors is an integer number (7850316).

Almost surely, 2^66474275 is an apocalyptic number.

66474275 is a deficient number, since it is larger than the sum of its proper divisors (27729517).

66474275 is a wasteful number, since it uses less digits than its factorization.

66474275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379870 (or 379865 counting only the distinct ones).

The product of its digits is 282240, while the sum is 41.

The square root of 66474275 is about 8153.1757616281. The cubic root of 66474275 is about 405.0897022259.

The spelling of 66474275 in words is "sixty-six million, four hundred seventy-four thousand, two hundred seventy-five".