66107946 has 16 divisors (see below), whose sum is σ = 132535008. Its totient is φ = 21982800.

The previous prime is 66107933. The next prime is 66107953. The reversal of 66107946 is 64970166.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10560 + ... + 15611.

It is an arithmetic number, because the mean of its divisors is an integer number (8283438).

Almost surely, 2^66107946 is an apocalyptic number.

66107946 is an abundant number, since it is smaller than the sum of its proper divisors (66427062).

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

66107946 is a wasteful number, since it uses less digits than its factorization.

66107946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26597.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 66107946 is about 8130.6793074134. The cubic root of 66107946 is about 404.3442031144.

The spelling of 66107946 in words is "sixty-six million, one hundred seven thousand, nine hundred forty-six".