1366656 has 32 divisors (see below), whose sum is σ = 3631200. Its totient is φ = 455424.

The previous prime is 1366649. The next prime is 1366657. The reversal of 1366656 is 6566631.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1366657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (113475).

2^1366656 is an apocalyptic number.

1366656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1366656 is an abundant number, since it is smaller than the sum of its proper divisors (2264544).

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

1366656 is an equidigital number, since it uses as much as digits as its factorization.

1366656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576 (or 3564 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 1366656 is about 1169.0406323135. The cubic root of 1366656 is about 110.9736160001.

The spelling of 1366656 in words is "one million, three hundred sixty-six thousand, six hundred fifty-six".