1387715 has 16 divisors (see below), whose sum is σ = 1966080. Its totient is φ = 920160.

The previous prime is 1387691. The next prime is 1387717. The reversal of 1387715 is 5177831.

It is not a de Polignac number, because 1387715 - 2¹⁰ = 1386691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1387717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (122880).

2^1387715 is an apocalyptic number.

1387715 is a deficient number, since it is larger than the sum of its proper divisors (578365).

1387715 is a wasteful number, since it uses less digits than its factorization.

1387715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322.

The product of its digits is 5880, while the sum is 32.

The square root of 1387715 is about 1178.0131578213. The cubic root of 1387715 is about 111.5407158909.

The spelling of 1387715 in words is "one million, three hundred eighty-seven thousand, seven hundred fifteen".