997512713 has 2 divisors, whose sum is σ = 997512714. Its totient is φ = 997512712.

The previous prime is 997512707. The next prime is 997512721. The reversal of 997512713 is 317215799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972940864 + 24571849 = 31192^2 + 4957^2 .

It is a cyclic number.

It is not a de Polignac number, because 997512713 - 2²⁰ = 996464137 is a prime.

It is a super-2 number, since 2×997512713² = 1990063225193240738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997512793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498756356 + 498756357.

It is an arithmetic number, because the mean of its divisors is an integer number (498756357).

Almost surely, 2^997512713 is an apocalyptic number.

It is an amenable number.

997512713 is a deficient number, since it is larger than the sum of its proper divisors (1).

997512713 is an equidigital number, since it uses as much as digits as its factorization.

997512713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 44.

The square root of 997512713 is about 31583.4246559805. The cubic root of 997512713 is about 999.1702159823.

The spelling of 997512713 in words is "nine hundred ninety-seven million, five hundred twelve thousand, seven hundred thirteen".