80819604 has 72 divisors (see below), whose sum is σ = 212808960. Its totient is φ = 25833600.

The previous prime is 80819603. The next prime is 80819611. The reversal of 80819604 is 40691808.

It is a happy number.

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 (80819603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154864 + ... + 155384.

It is an arithmetic number, because the mean of its divisors is an integer number (2955680).

Almost surely, 2^80819604 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 80819604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106404480).

80819604 is an abundant number, since it is smaller than the sum of its proper divisors (131989356).

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

80819604 is a wasteful number, since it uses less digits than its factorization.

80819604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 80819604 is about 8989.9724137508. The cubic root of 80819604 is about 432.3534273394.

The spelling of 80819604 in words is "eighty million, eight hundred nineteen thousand, six hundred four".