80066639 has 8 divisors (see below), whose sum is σ = 81151200. Its totient is φ = 78988000.

The previous prime is 80066621. The next prime is 80066653. The reversal of 80066639 is 93666008.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 80066639 - 2²⁴ = 63289423 is a prime.

It is a super-3 number, since 3×80066639³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80066659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30137 + ... + 32685.

It is an arithmetic number, because the mean of its divisors is an integer number (10143900).

Almost surely, 2^80066639 is an apocalyptic number.

80066639 is a deficient number, since it is larger than the sum of its proper divisors (1084561).

80066639 is a wasteful number, since it uses less digits than its factorization.

80066639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 80066639 is about 8947.9963679027. The cubic root of 80066639 is about 431.0065459463.

The spelling of 80066639 in words is "eighty million, sixty-six thousand, six hundred thirty-nine".