1366534 has 16 divisors (see below), whose sum is σ = 2227680. Its totient is φ = 628680.

The previous prime is 1366531. The next prime is 1366543. The reversal of 1366534 is 4356631.

1366534 = T₄₅₂ + T₄₅₃ + ... + T₄₆₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366531) 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, 4239 + ... + 4549.

It is an arithmetic number, because the mean of its divisors is an integer number (139230).

2^1366534 is an apocalyptic number.

1366534 is a deficient number, since it is larger than the sum of its proper divisors (861146).

1366534 is an equidigital number, since it uses as much as digits as its factorization.

1366534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 326 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 1366534 is about 1168.9884516110. The cubic root of 1366534 is about 110.9703137343.

It can be divided in two parts, 136 and 6534, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 1366534 in words is "one million, three hundred sixty-six thousand, five hundred thirty-four".