1356646 has 8 divisors (see below), whose sum is σ = 2069640. Its totient is φ = 666768.

The previous prime is 1356643. The next prime is 1356647. The reversal of 1356646 is 6466531.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356643) 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, 5631 + ... + 5866.

It is an arithmetic number, because the mean of its divisors is an integer number (258705).

2^1356646 is an apocalyptic number.

1356646 is a deficient number, since it is larger than the sum of its proper divisors (712994).

1356646 is a wasteful number, since it uses less digits than its factorization.

1356646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11558.

The product of its digits is 12960, while the sum is 31.

The square root of 1356646 is about 1164.7514756376. The cubic root of 1356646 is about 110.7020116615.

It can be divided in two parts, 1356 and 646, that added together give a palindrome (2002).

The spelling of 1356646 in words is "one million, three hundred fifty-six thousand, six hundred forty-six".