80666612 has 24 divisors (see below), whose sum is σ = 158637696. Its totient is φ = 35611488.

The previous prime is 80666611. The next prime is 80666627. The reversal of 80666612 is 21666608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80666611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32528 + ... + 34919.

It is an arithmetic number, because the mean of its divisors is an integer number (6609904).

Almost surely, 2^80666612 is an apocalyptic number.

It is an amenable number.

80666612 is a deficient number, since it is larger than the sum of its proper divisors (77971084).

80666612 is a wasteful number, since it uses less digits than its factorization.

80666612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67487 (or 67485 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 80666612 is about 8981.4593468990. The cubic root of 80666612 is about 432.0804391250.

The spelling of 80666612 in words is "eighty million, six hundred sixty-six thousand, six hundred twelve".