986650961 has 2 divisors, whose sum is σ = 986650962. Its totient is φ = 986650960.

The previous prime is 986650901. The next prime is 986650979. The reversal of 986650961 is 169056689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715027600 + 271623361 = 26740^2 + 16481^2 .

It is a cyclic number.

It is not a de Polignac number, because 986650961 - 2¹⁴ = 986634577 is a prime.

It is not a weakly prime, because it can be changed into another prime (986650901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493325480 + 493325481.

It is an arithmetic number, because the mean of its divisors is an integer number (493325481).

Almost surely, 2^986650961 is an apocalyptic number.

It is an amenable number.

986650961 is a deficient number, since it is larger than the sum of its proper divisors (1).

986650961 is an equidigital number, since it uses as much as digits as its factorization.

986650961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 986650961 is about 31411.0006367196. Note that the first 3 decimals coincide. The cubic root of 986650961 is about 995.5303725277.

The spelling of 986650961 in words is "nine hundred eighty-six million, six hundred fifty thousand, nine hundred sixty-one".