666487022 has 8 divisors (see below), whose sum is σ = 999840072. Its totient is φ = 333207000.

The previous prime is 666487009. The next prime is 666487027. The reversal of 666487022 is 220784666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666487027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26897 + ... + 45347.

It is an arithmetic number, because the mean of its divisors is an integer number (124980009).

Almost surely, 2^666487022 is an apocalyptic number.

666487022 is a deficient number, since it is larger than the sum of its proper divisors (333353050).

666487022 is a wasteful number, since it uses less digits than its factorization.

666487022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36514.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 666487022 is about 25816.4099363176. The cubic root of 666487022 is about 873.5019906515.

The spelling of 666487022 in words is "six hundred sixty-six million, four hundred eighty-seven thousand, twenty-two".