1387597 has 2 divisors, whose sum is σ = 1387598. Its totient is φ = 1387596.

The previous prime is 1387583. The next prime is 1387601. The reversal of 1387597 is 7957831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 477481 = 954^2 + 691^2 .

It is a cyclic number.

It is not a de Polignac number, because 1387597 - 2¹⁹ = 863309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693798 + 693799.

It is an arithmetic number, because the mean of its divisors is an integer number (693799).

2^1387597 is an apocalyptic number.

It is an amenable number.

1387597 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387597 is an equidigital number, since it uses as much as digits as its factorization.

1387597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 40.

The square root of 1387597 is about 1177.9630724263. The cubic root of 1387597 is about 111.5375542961.

The spelling of 1387597 in words is "one million, three hundred eighty-seven thousand, five hundred ninety-seven".