80897660 has 12 divisors (see below), whose sum is σ = 169885128. Its totient is φ = 32359056.

The previous prime is 80897657. The next prime is 80897681. The reversal of 80897660 is 6679808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2022422 + ... + 2022461.

It is an arithmetic number, because the mean of its divisors is an integer number (14157094).

Almost surely, 2^80897660 is an apocalyptic number.

It is an amenable number.

80897660 is an abundant number, since it is smaller than the sum of its proper divisors (88987468).

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

80897660 is a wasteful number, since it uses less digits than its factorization.

80897660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044892 (or 4044890 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 80897660 is about 8994.3126474456. The cubic root of 80897660 is about 432.4925722938.

The spelling of 80897660 in words is "eighty million, eight hundred ninety-seven thousand, six hundred sixty".