80839663 has 4 divisors (see below), whose sum is σ = 80935288. Its totient is φ = 80744040.

The previous prime is 80839657. The next prime is 80839667. The reversal of 80839663 is 36693808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80839663 - 2¹⁷ = 80708591 is a prime.

It is a super-2 number, since 2×80839663² = 13070102227907138, which contains 22 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 (80839667) 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, 46533 + ... + 48238.

It is an arithmetic number, because the mean of its divisors is an integer number (20233822).

Almost surely, 2^80839663 is an apocalyptic number.

80839663 is a deficient number, since it is larger than the sum of its proper divisors (95625).

80839663 is an equidigital number, since it uses as much as digits as its factorization.

80839663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95624.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 80839663 is about 8991.0879764353. The cubic root of 80839663 is about 432.3891936616.

The spelling of 80839663 in words is "eighty million, eight hundred thirty-nine thousand, six hundred sixty-three".