92721666 has 16 divisors (see below), whose sum is σ = 185539104. Its totient is φ = 30891264.

The previous prime is 92721661. The next prime is 92721677. The reversal of 92721666 is 66612729.

It is not an unprimeable number, because it can be changed into a prime (92721661) 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, 17506 + ... + 22178.

It is an arithmetic number, because the mean of its divisors is an integer number (11596194).

Almost surely, 2^92721666 is an apocalyptic number.

92721666 is an abundant number, since it is smaller than the sum of its proper divisors (92817438).

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

92721666 is a wasteful number, since it uses less digits than its factorization.

92721666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7985.

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

The square root of 92721666 is about 9629.2090017820. The cubic root of 92721666 is about 452.6130539736.

The spelling of 92721666 in words is "ninety-two million, seven hundred twenty-one thousand, six hundred sixty-six".