972666193 has 2 divisors, whose sum is σ = 972666194. Its totient is φ = 972666192.

The previous prime is 972666173. The next prime is 972666257. The reversal of 972666193 is 391666279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 781314304 + 191351889 = 27952^2 + 13833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972666193 is a prime.

It is a super-2 number, since 2×972666193² = 1892159046010226498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (972666143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486333096 + 486333097.

It is an arithmetic number, because the mean of its divisors is an integer number (486333097).

Almost surely, 2^972666193 is an apocalyptic number.

It is an amenable number.

972666193 is a deficient number, since it is larger than the sum of its proper divisors (1).

972666193 is an equidigital number, since it uses as much as digits as its factorization.

972666193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 972666193 is about 31187.5967814130. The cubic root of 972666193 is about 990.8044317116.

The spelling of 972666193 in words is "nine hundred seventy-two million, six hundred sixty-six thousand, one hundred ninety-three".