66630474 has 24 divisors (see below), whose sum is σ = 144761760. Its totient is φ = 22149288.

The previous prime is 66630467. The next prime is 66630479. The reversal of 66630474 is 47403666.

It is not an unprimeable number, because it can be changed into a prime (66630479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1939 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (6031740).

Almost surely, 2^66630474 is an apocalyptic number.

66630474 is an abundant number, since it is smaller than the sum of its proper divisors (78131286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66630474 is a wasteful number, since it uses less digits than its factorization.

66630474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10154 (or 10151 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 66630474 is about 8162.7491692444. The cubic root of 66630474 is about 405.4067427192.

The spelling of 66630474 in words is "sixty-six million, six hundred thirty thousand, four hundred seventy-four".