956691973 has 2 divisors, whose sum is σ = 956691974. Its totient is φ = 956691972.

The previous prime is 956691863. The next prime is 956691977. The reversal of 956691973 is 379196659.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 628103844 + 328588129 = 25062^2 + 18127^2 .

It is a cyclic number.

It is not a de Polignac number, because 956691973 - 2¹⁷ = 956560901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (956691977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478345986 + 478345987.

It is an arithmetic number, because the mean of its divisors is an integer number (478345987).

Almost surely, 2^956691973 is an apocalyptic number.

It is an amenable number.

956691973 is a deficient number, since it is larger than the sum of its proper divisors (1).

956691973 is an equidigital number, since it uses as much as digits as its factorization.

956691973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2755620, while the sum is 55.

The square root of 956691973 is about 30930.4376464349. The cubic root of 956691973 is about 985.3504290522.

The spelling of 956691973 in words is "nine hundred fifty-six million, six hundred ninety-one thousand, nine hundred seventy-three".