80766920 has 64 divisors (see below), whose sum is σ = 197406720. Its totient is φ = 29562624.

The previous prime is 80766913. The next prime is 80766937. The reversal of 80766920 is 2966708.

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, 65429 + ... + 66651.

It is an arithmetic number, because the mean of its divisors is an integer number (3084480).

Almost surely, 2^80766920 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 80766920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98703360).

80766920 is an abundant number, since it is smaller than the sum of its proper divisors (116639800).

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

80766920 is a wasteful number, since it uses less digits than its factorization.

80766920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 80766920 is about 8987.0417824777. The cubic root of 80766920 is about 432.2594606197.

The spelling of 80766920 in words is "eighty million, seven hundred sixty-six thousand, nine hundred twenty".