80797760 has 56 divisors (see below), whose sum is σ = 194630040. Its totient is φ = 31944704.

The previous prime is 80797729. The next prime is 80797763. The reversal of 80797760 is 6779708.

It can be written as a sum of positive squares in 4 ways, for example, as 1658944 + 79138816 = 1288^2 + 8896^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (80797763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27062 + ... + 29898.

Almost surely, 2^80797760 is an apocalyptic number.

80797760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80797760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97315020).

80797760 is an abundant number, since it is smaller than the sum of its proper divisors (113832280).

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

80797760 is a wasteful number, since it uses less digits than its factorization.

80797760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943 (or 2933 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 44.

The square root of 80797760 is about 8988.7574224695. The cubic root of 80797760 is about 432.3144715300.

The spelling of 80797760 in words is "eighty million, seven hundred ninety-seven thousand, seven hundred sixty".