880000081 has 2 divisors, whose sum is σ = 880000082. Its totient is φ = 880000080.

The previous prime is 880000027. The next prime is 880000123. The reversal of 880000081 is 180000088.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786297681 + 93702400 = 28041^2 + 9680^2 .

It is a cyclic number.

It is not a de Polignac number, because 880000081 - 2¹⁷ = 879869009 is a prime.

It is a super-2 number, since 2×880000081² = 1548800285120013122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (880000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440000040 + 440000041.

It is an arithmetic number, because the mean of its divisors is an integer number (440000041).

Almost surely, 2^880000081 is an apocalyptic number.

It is an amenable number.

880000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

880000081 is an equidigital number, since it uses as much as digits as its factorization.

880000081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 880000081 is about 29664.7953136373. The cubic root of 880000081 is about 958.2840008145.

The spelling of 880000081 in words is "eight hundred eighty million, eighty-one", and thus it is an aban number.