880861 has 2 divisors, whose sum is σ = 880862. Its totient is φ = 880860.

The previous prime is 880853. The next prime is 880871. The reversal of 880861 is 168088.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820836 + 60025 = 906^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 880861 - 2³ = 880853 is a prime.

It is a super-2 number, since 2×880861² = 1551832202642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440430 + 440431.

It is an arithmetic number, because the mean of its divisors is an integer number (440431).

2⁸⁸⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

880861 is a deficient number, since it is larger than the sum of its proper divisors (1).

880861 is an equidigital number, since it uses as much as digits as its factorization.

880861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 880861 is about 938.5419543100. The cubic root of 880861 is about 95.8596400790.

The spelling of 880861 in words is "eight hundred eighty thousand, eight hundred sixty-one".