1697497663 has 4 divisors (see below), whose sum is σ = 1697800608. Its totient is φ = 1697194720.

The previous prime is 1697497603. The next prime is 1697497667. The reversal of 1697497663 is 3667947961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1697497663 - 2²⁵ = 1663943231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1697497598 and 1697497607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1697497667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142906 + ... + 154327.

It is an arithmetic number, because the mean of its divisors is an integer number (424450152).

Almost surely, 2^1697497663 is an apocalyptic number.

1697497663 is a deficient number, since it is larger than the sum of its proper divisors (302945).

1697497663 is an equidigital number, since it uses as much as digits as its factorization.

1697497663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302944.

The product of its digits is 10287648, while the sum is 58.

The square root of 1697497663 is about 41200.6997877463. The cubic root of 1697497663 is about 1192.8973166945.

The spelling of 1697497663 in words is "one billion, six hundred ninety-seven million, four hundred ninety-seven thousand, six hundred sixty-three".