66212466 has 32 divisors (see below), whose sum is σ = 137822208. Its totient is φ = 21183120.

The previous prime is 66212459. The next prime is 66212477. The reversal of 66212466 is 66421266.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22221 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (4306944).

Almost surely, 2^66212466 is an apocalyptic number.

66212466 is an abundant number, since it is smaller than the sum of its proper divisors (71609742).

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

66212466 is a wasteful number, since it uses less digits than its factorization.

66212466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966.

The product of its digits is 20736, while the sum is 33.

The square root of 66212466 is about 8137.1042760923. The cubic root of 66212466 is about 404.5571871070.

The spelling of 66212466 in words is "sixty-six million, two hundred twelve thousand, four hundred sixty-six".