880661 has 2 divisors, whose sum is σ = 880662. Its totient is φ = 880660.

The previous prime is 880603. The next prime is 880667. The reversal of 880661 is 166088.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844561 + 36100 = 919^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 880661 - 2¹⁴ = 864277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440330 + 440331.

It is an arithmetic number, because the mean of its divisors is an integer number (440331).

2⁸⁸⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

880661 is a deficient number, since it is larger than the sum of its proper divisors (1).

880661 is an equidigital number, since it uses as much as digits as its factorization.

880661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 880661 is about 938.4354000143. The cubic root of 880661 is about 95.8523845342.

It can be divided in two parts, 8806 and 61, that multiplied together give a triangular number (537166 = T₁₀₃₆).

The spelling of 880661 in words is "eight hundred eighty thousand, six hundred sixty-one".