666075432 has 32 divisors (see below), whose sum is σ = 1816570080. Its totient is φ = 201840960.

The previous prime is 666075427. The next prime is 666075439. The reversal of 666075432 is 234570666.

It is a super-2 number, since 2×666075432² = 887312962227973248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666075439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261243 + ... + 1261770.

It is an arithmetic number, because the mean of its divisors is an integer number (56767815).

Almost surely, 2^666075432 is an apocalyptic number.

It is an amenable number.

666075432 is an abundant number, since it is smaller than the sum of its proper divisors (1150494648).

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

666075432 is a wasteful number, since it uses less digits than its factorization.

666075432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523033 (or 2523029 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 666075432 is about 25808.4372250627. The cubic root of 666075432 is about 873.3221428294.

The spelling of 666075432 in words is "six hundred sixty-six million, seventy-five thousand, four hundred thirty-two".