80609904 has 70 divisors (see below), whose sum is σ = 234199296. Its totient is φ = 26866080.

The previous prime is 80609899. The next prime is 80609909. The reversal of 80609904 is 40990608.

It is an interprime number because it is at equal distance from previous prime (80609899) and next prime (80609909).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80609909) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 8209 + ... + 15119.

Almost surely, 2^80609904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80609904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117099648).

80609904 is an abundant number, since it is smaller than the sum of its proper divisors (153589392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80609904 is an equidigital number, since it uses as much as digits as its factorization.

80609904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6937 (or 6916 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 80609904 is about 8978.3018438901. The cubic root of 80609904 is about 431.9791656619.

The spelling of 80609904 in words is "eighty million, six hundred nine thousand, nine hundred four".