80563660 has 24 divisors (see below), whose sum is σ = 170863056. Its totient is φ = 31905600.

The previous prime is 80563633. The next prime is 80563673. The reversal of 80563660 is 6636508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17922 + ... + 21961.

It is an arithmetic number, because the mean of its divisors is an integer number (7119294).

Almost surely, 2^80563660 is an apocalyptic number.

It is an amenable number.

80563660 is an abundant number, since it is smaller than the sum of its proper divisors (90299396).

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

80563660 is a wasteful number, since it uses less digits than its factorization.

80563660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39993 (or 39991 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 80563660 is about 8975.7261544679. The cubic root of 80563660 is about 431.8965444422.

The spelling of 80563660 in words is "eighty million, five hundred sixty-three thousand, six hundred sixty".