972763997 has 2 divisors, whose sum is σ = 972763998. Its totient is φ = 972763996.

The previous prime is 972763969. The next prime is 972764041. The reversal of 972763997 is 799367279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 530334841 + 442429156 = 23029^2 + 21034^2 .

It is a cyclic number.

It is not a de Polignac number, because 972763997 - 2⁸ = 972763741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972763397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486381998 + 486381999.

It is an arithmetic number, because the mean of its divisors is an integer number (486381999).

Almost surely, 2^972763997 is an apocalyptic number.

It is an amenable number.

972763997 is a deficient number, since it is larger than the sum of its proper divisors (1).

972763997 is an equidigital number, since it uses as much as digits as its factorization.

972763997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9001692, while the sum is 59.

The square root of 972763997 is about 31189.1647371327. The cubic root of 972763997 is about 990.8376398802.

The spelling of 972763997 in words is "nine hundred seventy-two million, seven hundred sixty-three thousand, nine hundred ninety-seven".