80866740 has 48 divisors (see below), whose sum is σ = 226880640. Its totient is φ = 21521280.

The previous prime is 80866697. The next prime is 80866763. The reversal of 80866740 is 4766808.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38641 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (4726680).

Almost surely, 2^80866740 is an apocalyptic number.

It is an amenable number.

80866740 is an abundant number, since it is smaller than the sum of its proper divisors (146013900).

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

80866740 is a wasteful number, since it uses less digits than its factorization.

80866740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 80866740 is about 8992.5936191957. The cubic root of 80866740 is about 432.4374640891.

The spelling of 80866740 in words is "eighty million, eight hundred sixty-six thousand, seven hundred forty".