1397563 has 2 divisors, whose sum is σ = 1397564. Its totient is φ = 1397562.

The previous prime is 1397551. The next prime is 1397569. The reversal of 1397563 is 3657931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1397563 - 2⁵ = 1397531 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1397569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698781 + 698782.

It is an arithmetic number, because the mean of its divisors is an integer number (698782).

2^1397563 is an apocalyptic number.

1397563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397563 is an equidigital number, since it uses as much as digits as its factorization.

1397563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 34.

The square root of 1397563 is about 1182.1856876143. The cubic root of 1397563 is about 111.8039459140.

The spelling of 1397563 in words is "one million, three hundred ninety-seven thousand, five hundred sixty-three".