1387037 has 2 divisors, whose sum is σ = 1387038. Its totient is φ = 1387036.

The previous prime is 1387021. The next prime is 1387039. The reversal of 1387037 is 7307831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729316 + 657721 = 854^2 + 811^2 .

It is an emirp because it is prime and its reverse (7307831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1387037 - 2⁴ = 1387021 is a prime.

Together with 1387039, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1387039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693518 + 693519.

It is an arithmetic number, because the mean of its divisors is an integer number (693519).

2^1387037 is an apocalyptic number.

It is an amenable number.

1387037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387037 is an equidigital number, since it uses as much as digits as its factorization.

1387037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1387037 is about 1177.7253499862. The cubic root of 1387037 is about 111.5225476732.

It can be divided in two parts, 138703 and 7, that multiplied together give a triangular number (970921 = T₁₃₉₃).

The spelling of 1387037 in words is "one million, three hundred eighty-seven thousand, thirty-seven".