2097840697 has 2 divisors, whose sum is σ = 2097840698. Its totient is φ = 2097840696.

The previous prime is 2097840659. The next prime is 2097840707. The reversal of 2097840697 is 7960487902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1508856336 + 588984361 = 38844^2 + 24269^2 .

It is a cyclic number.

It is not a de Polignac number, because 2097840697 - 2¹¹ = 2097838649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2097840617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048920348 + 1048920349.

It is an arithmetic number, because the mean of its divisors is an integer number (1048920349).

Almost surely, 2^2097840697 is an apocalyptic number.

It is an amenable number.

2097840697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097840697 is an equidigital number, since it uses as much as digits as its factorization.

2097840697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 2097840697 is about 45802.1909628786. The cubic root of 2097840697 is about 1280.1401004283.

The spelling of 2097840697 in words is "two billion, ninety-seven million, eight hundred forty thousand, six hundred ninety-seven".