666732954 has 8 divisors (see below), whose sum is σ = 1333465920. Its totient is φ = 222244316.

The previous prime is 666732953. The next prime is 666732959. The reversal of 666732954 is 459237666.

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

666732954 is an admirable number.

It is a super-2 number, since 2×666732954² = 889065663899132232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666732953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55561074 + ... + 55561085.

It is an arithmetic number, because the mean of its divisors is an integer number (166683240).

Almost surely, 2^666732954 is an apocalyptic number.

666732954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

666732954 is a wasteful number, since it uses less digits than its factorization.

666732954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111122164.

The product of its digits is 1632960, while the sum is 48.

The square root of 666732954 is about 25821.1725914994. The cubic root of 666732954 is about 873.6094174365.

It can be divided in two parts, 6667 and 32954, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 666732954 in words is "six hundred sixty-six million, seven hundred thirty-two thousand, nine hundred fifty-four".