1387607 has 4 divisors (see below), whose sum is σ = 1494360. Its totient is φ = 1280856.

The previous prime is 1387601. The next prime is 1387649. The reversal of 1387607 is 7067831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1387607 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 (1387601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53357 + ... + 53382.

It is an arithmetic number, because the mean of its divisors is an integer number (373590).

2^1387607 is an apocalyptic number.

1387607 is a deficient number, since it is larger than the sum of its proper divisors (106753).

1387607 is a wasteful number, since it uses less digits than its factorization.

1387607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106752.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1387607 is about 1177.9673170339. The cubic root of 1387607 is about 111.5378222348.

The spelling of 1387607 in words is "one million, three hundred eighty-seven thousand, six hundred seven".