997075297 has 8 divisors (see below), whose sum is σ = 1025134056. Its totient is φ = 969075072.

The previous prime is 997075291. The next prime is 997075393. The reversal of 997075297 is 792570799.

It can be written as a sum of positive squares in 4 ways, for example, as 242144721 + 754930576 = 15561^2 + 27476^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997075297 - 2¹⁹ = 996551009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997075291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21123 + ... + 49399.

It is an arithmetic number, because the mean of its divisors is an integer number (128141757).

Almost surely, 2^997075297 is an apocalyptic number.

It is an amenable number.

997075297 is a deficient number, since it is larger than the sum of its proper divisors (28058759).

997075297 is a wasteful number, since it uses less digits than its factorization.

997075297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29267.

The product of its (nonzero) digits is 2500470, while the sum is 55.

The square root of 997075297 is about 31576.4991251405. The cubic root of 997075297 is about 999.0241470207.

The spelling of 997075297 in words is "nine hundred ninety-seven million, seventy-five thousand, two hundred ninety-seven".