8820961 has 2 divisors, whose sum is σ = 8820962. Its totient is φ = 8820960.

The previous prime is 8820947. The next prime is 8820971. The reversal of 8820961 is 1690288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 664225 = 2856^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 8820961 - 2¹⁵ = 8788193 is a prime.

It is equal to p₅₉₁₂₉₈ and since 8820961 and 591298 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8820971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410480 + 4410481.

It is an arithmetic number, because the mean of its divisors is an integer number (4410481).

Almost surely, 2^8820961 is an apocalyptic number.

It is an amenable number.

8820961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8820961 is an equidigital number, since it uses as much as digits as its factorization.

8820961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 8820961 is about 2970.0102693425. The cubic root of 8820961 is about 206.6198145035.

The spelling of 8820961 in words is "eight million, eight hundred twenty thousand, nine hundred sixty-one".