80819617 has 4 divisors (see below), whose sum is σ = 80908480. Its totient is φ = 80730756.

The previous prime is 80819611. The next prime is 80819633. The reversal of 80819617 is 71691808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80819617 - 2¹⁹ = 80295329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80819617.

It is not an unprimeable number, because it can be changed into a prime (80819611) 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, 43053 + ... + 44890.

It is an arithmetic number, because the mean of its divisors is an integer number (20227120).

Almost surely, 2^80819617 is an apocalyptic number.

It is an amenable number.

80819617 is a deficient number, since it is larger than the sum of its proper divisors (88863).

80819617 is an equidigital number, since it uses as much as digits as its factorization.

80819617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88862.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 80819617 is about 8989.9731367786. The cubic root of 80819617 is about 432.3534505210.

The spelling of 80819617 in words is "eighty million, eight hundred nineteen thousand, six hundred seventeen".