6666432 has 28 divisors (see below), whose sum is σ = 17638776. Its totient is φ = 2222080.

The previous prime is 6666391. The next prime is 6666437. The reversal of 6666432 is 2346666.

It is a super-2 number, since 2×6666432² = 88882631221248, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6666393 and 6666402.

It is not an unprimeable number, because it can be changed into a prime (6666437) 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, 17169 + ... + 17552.

Almost surely, 2^6666432 is an apocalyptic number.

It is an amenable number.

6666432 is an abundant number, since it is smaller than the sum of its proper divisors (10972344).

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

6666432 is a wasteful number, since it uses less digits than its factorization.

6666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34736 (or 34726 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 6666432 is about 2581.9434540671. The cubic root of 6666432 is about 188.2049974524.

The spelling of 6666432 in words is "six million, six hundred sixty-six thousand, four hundred thirty-two".