972865111 has 2 divisors, whose sum is σ = 972865112. Its totient is φ = 972865110.

The previous prime is 972865093. The next prime is 972865121. The reversal of 972865111 is 111568279.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972865111 - 2¹⁷ = 972734039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972865121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486432555 + 486432556.

It is an arithmetic number, because the mean of its divisors is an integer number (486432556).

Almost surely, 2^972865111 is an apocalyptic number.

972865111 is a deficient number, since it is larger than the sum of its proper divisors (1).

972865111 is an equidigital number, since it uses as much as digits as its factorization.

972865111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 40.

The square root of 972865111 is about 31190.7856746187. The cubic root of 972865111 is about 990.8719695793.

The spelling of 972865111 in words is "nine hundred seventy-two million, eight hundred sixty-five thousand, one hundred eleven".