80516664 has 48 divisors (see below), whose sum is σ = 221067600. Its totient is φ = 26469504.

The previous prime is 80516663. The next prime is 80516669. The reversal of 80516664 is 46661508.

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 (80516663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2404 + ... + 12915.

It is an arithmetic number, because the mean of its divisors is an integer number (4605575).

Almost surely, 2^80516664 is an apocalyptic number.

It is an amenable number.

80516664 is an abundant number, since it is smaller than the sum of its proper divisors (140550936).

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

80516664 is a wasteful number, since it uses less digits than its factorization.

80516664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404 (or 15397 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 80516664 is about 8973.1078228226. The cubic root of 80516664 is about 431.8125472734.

The spelling of 80516664 in words is "eighty million, five hundred sixteen thousand, six hundred sixty-four".