80663860 has 48 divisors (see below), whose sum is σ = 175859712. Its totient is φ = 31046400.

The previous prime is 80663857. The next prime is 80663867. The reversal of 80663860 is 6836608.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80663867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173989 + ... + 174451.

It is an arithmetic number, because the mean of its divisors is an integer number (3663744).

Almost surely, 2^80663860 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 80663860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87929856).

80663860 is an abundant number, since it is smaller than the sum of its proper divisors (95195852).

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

80663860 is a wasteful number, since it uses less digits than its factorization.

80663860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 80663860 is about 8981.3061410911. The cubic root of 80663860 is about 432.0755254899.

The spelling of 80663860 in words is "eighty million, six hundred sixty-three thousand, eight hundred sixty".