1387634 has 8 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 690676.

The previous prime is 1387601. The next prime is 1387649. The reversal of 1387634 is 4367831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1387634.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (261360).

2^1387634 is an apocalyptic number.

1387634 is a deficient number, since it is larger than the sum of its proper divisors (703246).

1387634 is a wasteful number, since it uses less digits than its factorization.

1387634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144.

The product of its digits is 12096, while the sum is 32.

The square root of 1387634 is about 1177.9787773980. The cubic root of 1387634 is about 111.5385456629.

The spelling of 1387634 in words is "one million, three hundred eighty-seven thousand, six hundred thirty-four".