80065890 has 48 divisors (see below), whose sum is σ = 209791296. Its totient is φ = 21184800.

The previous prime is 80065883. The next prime is 80065927. The reversal of 80065890 is 9856008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8395 + ... + 15185.

It is an arithmetic number, because the mean of its divisors is an integer number (4370652).

Almost surely, 2^80065890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80065890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104895648).

80065890 is an abundant number, since it is smaller than the sum of its proper divisors (129725406).

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

80065890 is a wasteful number, since it uses less digits than its factorization.

80065890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 80065890 is about 8947.9545148598. The cubic root of 80065890 is about 431.0052019620.

The spelling of 80065890 in words is "eighty million, sixty-five thousand, eight hundred ninety".