1356636 has 24 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 448240.

The previous prime is 1356629. The next prime is 1356643. The reversal of 1356636 is 6366531.

It is an interprime number because it is at equal distance from previous prime (1356629) and next prime (1356643).

It is a super-2 number, since 2×1356636² = 3680922472992, which contains 22 as substring.

It is a nialpdrome in base 12.

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 7 ways as a sum of consecutive naturals, for example, 1141 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (133056).

2^1356636 is an apocalyptic number.

It is an amenable number.

1356636 is an abundant number, since it is smaller than the sum of its proper divisors (1836708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1356636 is a wasteful number, since it uses less digits than its factorization.

1356636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 999 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 1356636 is about 1164.7471828685. The cubic root of 1356636 is about 110.7017396615.

The spelling of 1356636 in words is "one million, three hundred fifty-six thousand, six hundred thirty-six".