1397697 has 32 divisors (see below), whose sum is σ = 2334720. Its totient is φ = 725760.

The previous prime is 1397681. The next prime is 1397717. The reversal of 1397697 is 7967931.

It is not a de Polignac number, because 1397697 - 2⁴ = 1397681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12313 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (72960).

2^1397697 is an apocalyptic number.

It is an amenable number.

1397697 is a deficient number, since it is larger than the sum of its proper divisors (937023).

1397697 is a wasteful number, since it uses less digits than its factorization.

1397697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173.

The product of its digits is 71442, while the sum is 42.

The square root of 1397697 is about 1182.2423609396. The cubic root of 1397697 is about 111.8075190982.

The spelling of 1397697 in words is "one million, three hundred ninety-seven thousand, six hundred ninety-seven".