1397597 has 4 divisors (see below), whose sum is σ = 1445820. Its totient is φ = 1349376.

The previous prime is 1397581. The next prime is 1397603. The reversal of 1397597 is 7957931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7957931 = 23 ⋅345997.

It can be written as a sum of positive squares in 2 ways, for example, as 894916 + 502681 = 946^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397597 - 2⁴ = 1397581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397497) 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, 24068 + ... + 24125.

It is an arithmetic number, because the mean of its divisors is an integer number (361455).

2^1397597 is an apocalyptic number.

It is an amenable number.

1397597 is a deficient number, since it is larger than the sum of its proper divisors (48223).

1397597 is an equidigital number, since it uses as much as digits as its factorization.

1397597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48222.

The product of its digits is 59535, while the sum is 41.

The square root of 1397597 is about 1182.2000676704. The cubic root of 1397597 is about 111.8048525644.

The spelling of 1397597 in words is "one million, three hundred ninety-seven thousand, five hundred ninety-seven".