970661917 has 2 divisors, whose sum is σ = 970661918. Its totient is φ = 970661916.

The previous prime is 970661849. The next prime is 970661941. The reversal of 970661917 is 719166079.

970661917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969139161 + 1522756 = 31131^2 + 1234^2 .

It is a cyclic number.

It is not a de Polignac number, because 970661917 - 2¹⁹ = 970137629 is a prime.

It is a super-2 number, since 2×970661917² = 1884369114228229778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (970661957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485330958 + 485330959.

It is an arithmetic number, because the mean of its divisors is an integer number (485330959).

Almost surely, 2^970661917 is an apocalyptic number.

It is an amenable number.

970661917 is a deficient number, since it is larger than the sum of its proper divisors (1).

970661917 is an equidigital number, since it uses as much as digits as its factorization.

970661917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 970661917 is about 31155.4476295880. The cubic root of 970661917 is about 990.1234131764.

The spelling of 970661917 in words is "nine hundred seventy million, six hundred sixty-one thousand, nine hundred seventeen".