1697697 has 6 divisors (see below), whose sum is σ = 2452242. Its totient is φ = 1131792.

The previous prime is 1697677. The next prime is 1697701. The reversal of 1697697 is 7967961.

It can be written as a sum of positive squares in only one way, i.e., 1382976 + 314721 = 1176^2 + 561^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1697697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1697627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94308 + ... + 94325.

It is an arithmetic number, because the mean of its divisors is an integer number (408707).

2^1697697 is an apocalyptic number.

It is an amenable number.

1697697 is a deficient number, since it is larger than the sum of its proper divisors (754545).

1697697 is a wasteful number, since it uses less digits than its factorization.

1697697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188639 (or 188636 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 1697697 is about 1302.9570215475. The cubic root of 1697697 is about 119.2944008809.

The spelling of 1697697 in words is "one million, six hundred ninety-seven thousand, six hundred ninety-seven".