1662356 has 12 divisors (see below), whose sum is σ = 2949492. Its totient is φ = 819648.

The previous prime is 1662347. The next prime is 1662361. The reversal of 1662356 is 6532661.

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 1123600 = 734^2 + 1060^2 .

It is a congruent number.

It is an unprimeable number.

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, 2555 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (245791).

2^1662356 is an apocalyptic number.

It is an amenable number.

1662356 is a deficient number, since it is larger than the sum of its proper divisors (1287136).

1662356 is a wasteful number, since it uses less digits than its factorization.

1662356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770 (or 5768 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 1662356 is about 1289.3238538087. The cubic root of 1662356 is about 118.4608046886.

The spelling of 1662356 in words is "one million, six hundred sixty-two thousand, three hundred fifty-six".