997276901 has 2 divisors, whose sum is σ = 997276902. Its totient is φ = 997276900.

The previous prime is 997276859. The next prime is 997276919. The reversal of 997276901 is 109672799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534811876 + 462465025 = 23126^2 + 21505^2 .

It is a cyclic number.

It is not a de Polignac number, because 997276901 - 2²⁶ = 930168037 is a prime.

It is a super-2 number, since 2×997276901² = 1989122434536327602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 997276901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997276001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498638450 + 498638451.

It is an arithmetic number, because the mean of its divisors is an integer number (498638451).

Almost surely, 2^997276901 is an apocalyptic number.

It is an amenable number.

997276901 is a deficient number, since it is larger than the sum of its proper divisors (1).

997276901 is an equidigital number, since it uses as much as digits as its factorization.

997276901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 50.

The square root of 997276901 is about 31579.6912746151. The cubic root of 997276901 is about 999.0914751659.

The spelling of 997276901 in words is "nine hundred ninety-seven million, two hundred seventy-six thousand, nine hundred one".