80623859 has 4 divisors (see below), whose sum is σ = 84867240. Its totient is φ = 76380480.

The previous prime is 80623853. The next prime is 80623867. The reversal of 80623859 is 95832608.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80623859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80623853) 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, 2121662 + ... + 2121699.

It is an arithmetic number, because the mean of its divisors is an integer number (21216810).

Almost surely, 2^80623859 is an apocalyptic number.

80623859 is a deficient number, since it is larger than the sum of its proper divisors (4243381).

80623859 is a wasteful number, since it uses less digits than its factorization.

80623859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243380.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 80623859 is about 8979.0789616753. The cubic root of 80623859 is about 432.0040919680.

The spelling of 80623859 in words is "eighty million, six hundred twenty-three thousand, eight hundred fifty-nine".