80385660 has 72 divisors (see below), whose sum is σ = 246966720. Its totient is φ = 21161088.

The previous prime is 80385659. The next prime is 80385689. The reversal of 80385660 is 6658308.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11394 + ... + 17046.

Almost surely, 2^80385660 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 80385660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123483360).

80385660 is an abundant number, since it is smaller than the sum of its proper divisors (166581060).

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

80385660 is a wasteful number, since it uses less digits than its factorization.

80385660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747 (or 5742 counting only the distinct ones).

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

The square root of 80385660 is about 8965.8050391473. The cubic root of 80385660 is about 431.5782277507.

The spelling of 80385660 in words is "eighty million, three hundred eighty-five thousand, six hundred sixty".