666277992 has 48 divisors (see below), whose sum is σ = 1805743680. Its totient is φ = 221940000.

The previous prime is 666277967. The next prime is 666278023. The reversal of 666277992 is 299772666.

It is a happy number.

666277992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160017 + ... + 164127.

It is an arithmetic number, because the mean of its divisors is an integer number (37619660).

Almost surely, 2^666277992 is an apocalyptic number.

It is an amenable number.

666277992 is an abundant number, since it is smaller than the sum of its proper divisors (1139465688).

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

666277992 is a wasteful number, since it uses less digits than its factorization.

666277992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6374 (or 6367 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 666277992 is about 25812.3612248086. The cubic root of 666277992 is about 873.4106624351.

The spelling of 666277992 in words is "six hundred sixty-six million, two hundred seventy-seven thousand, nine hundred ninety-two".