80936643 has 16 divisors (see below), whose sum is σ = 114461856. Its totient is φ = 50695680.

The previous prime is 80936641. The next prime is 80936693. The reversal of 80936643 is 34663908.

It is not a de Polignac number, because 80936643 - 2¹ = 80936641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80936641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40905 + ... + 42837.

It is an arithmetic number, because the mean of its divisors is an integer number (7153866).

Almost surely, 2^80936643 is an apocalyptic number.

80936643 is a deficient number, since it is larger than the sum of its proper divisors (33525213).

80936643 is a wasteful number, since it uses less digits than its factorization.

80936643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 80936643 is about 8996.4794781070. The cubic root of 80936643 is about 432.5620310418.

The spelling of 80936643 in words is "eighty million, nine hundred thirty-six thousand, six hundred forty-three".