997670097 has 24 divisors (see below), whose sum is σ = 1478655360. Its totient is φ = 647824320.

The previous prime is 997670077. The next prime is 997670099. The reversal of 997670097 is 790076799.

It is not a de Polignac number, because 997670097 - 2¹⁶ = 997604561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (997670099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266404 + ... + 270122.

It is an arithmetic number, because the mean of its divisors is an integer number (61610640).

Almost surely, 2^997670097 is an apocalyptic number.

It is an amenable number.

997670097 is a deficient number, since it is larger than the sum of its proper divisors (480985263).

997670097 is a wasteful number, since it uses less digits than its factorization.

997670097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493 (or 4490 counting only the distinct ones).

The product of its (nonzero) digits is 1500282, while the sum is 54.

The square root of 997670097 is about 31585.9161177890. The cubic root of 997670097 is about 999.2227617238. Note that the first 3 decimals are identical.

The spelling of 997670097 in words is "nine hundred ninety-seven million, six hundred seventy thousand, ninety-seven".