1697860097 has 2 divisors, whose sum is σ = 1697860098. Its totient is φ = 1697860096.

The previous prime is 1697860037. The next prime is 1697860127. The reversal of 1697860097 is 7900687961.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425742081 + 272118016 = 37759^2 + 16496^2 .

It is an emirp because it is prime and its reverse (7900687961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1697860097 - 2²⁰ = 1696811521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1697860037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 848930048 + 848930049.

It is an arithmetic number, because the mean of its divisors is an integer number (848930049).

Almost surely, 2^1697860097 is an apocalyptic number.

It is an amenable number.

1697860097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1697860097 is an equidigital number, since it uses as much as digits as its factorization.

1697860097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 1697860097 is about 41205.0979491616. The cubic root of 1697860097 is about 1192.9822094534.

The spelling of 1697860097 in words is "one billion, six hundred ninety-seven million, eight hundred sixty thousand, ninety-seven".