1356387 has 8 divisors (see below), whose sum is σ = 1816080. Its totient is φ = 900480.

The previous prime is 1356371. The next prime is 1356389. The reversal of 1356387 is 7836531.

It is a happy number.

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

It is not a de Polignac number, because 1356387 - 2⁴ = 1356371 is a prime.

It is a d-powerful number, because it can be written as 1 + 3⁶ + 5³ + 6² + 3¹² + 8³ + 7⁷ .

It is not an unprimeable number, because it can be changed into a prime (1356389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39 + ... + 1647.

It is an arithmetic number, because the mean of its divisors is an integer number (227010).

2^1356387 is an apocalyptic number.

1356387 is a deficient number, since it is larger than the sum of its proper divisors (459693).

1356387 is a wasteful number, since it uses less digits than its factorization.

1356387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893.

The product of its digits is 15120, while the sum is 33.

The square root of 1356387 is about 1164.6402878142. The cubic root of 1356387 is about 110.6949664323.

The spelling of 1356387 in words is "one million, three hundred fifty-six thousand, three hundred eighty-seven".