1697497664 has 28 divisors (see below), whose sum is σ = 3372301104. Its totient is φ = 847784064.

The previous prime is 1697497603. The next prime is 1697497667. The reversal of 1697497664 is 4667947961.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43427 + ... + 72669.

Almost surely, 2^1697497664 is an apocalyptic number.

It is an amenable number.

1697497664 is a deficient number, since it is larger than the sum of its proper divisors (1674803440).

1697497664 is an equidigital number, since it uses as much as digits as its factorization.

1697497664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30162 (or 30152 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 59.

The square root of 1697497664 is about 41200.6997998820. The cubic root of 1697497664 is about 1192.8973169288.

The spelling of 1697497664 in words is "one billion, six hundred ninety-seven million, four hundred ninety-seven thousand, six hundred sixty-four".