1387670 has 16 divisors (see below), whose sum is σ = 2514240. Its totient is φ = 551424.

The previous prime is 1387669. The next prime is 1387681. The reversal of 1387670 is 767831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571 + ... + 2289.

It is an arithmetic number, because the mean of its divisors is an integer number (157140).

2^1387670 is an apocalyptic number.

1387670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1387670 is a deficient number, since it is larger than the sum of its proper divisors (1126570).

1387670 is a wasteful number, since it uses less digits than its factorization.

1387670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919.

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

The square root of 1387670 is about 1177.9940577100. The cubic root of 1387670 is about 111.5395102191.

The spelling of 1387670 in words is "one million, three hundred eighty-seven thousand, six hundred seventy".