997162757 has 2 divisors, whose sum is σ = 997162758. Its totient is φ = 997162756.

The previous prime is 997162753. The next prime is 997162781. The reversal of 997162757 is 757261799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858841636 + 138321121 = 29306^2 + 11761^2 .

It is a cyclic number.

It is not a de Polignac number, because 997162757 - 2² = 997162753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 997162699 and 997162708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997162753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498581378 + 498581379.

It is an arithmetic number, because the mean of its divisors is an integer number (498581379).

Almost surely, 2^997162757 is an apocalyptic number.

It is an amenable number.

997162757 is a deficient number, since it is larger than the sum of its proper divisors (1).

997162757 is an equidigital number, since it uses as much as digits as its factorization.

997162757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 53.

The square root of 997162757 is about 31577.8839854731. The cubic root of 997162757 is about 999.0533564822.

The spelling of 997162757 in words is "nine hundred ninety-seven million, one hundred sixty-two thousand, seven hundred fifty-seven".