1366147 has 4 divisors (see below), whose sum is σ = 1383520. Its totient is φ = 1348776.

The previous prime is 1366121. The next prime is 1366159. The reversal of 1366147 is 7416631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1366147 - 2⁷ = 1366019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1366117) 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, 8568 + ... + 8725.

It is an arithmetic number, because the mean of its divisors is an integer number (345880).

2^1366147 is an apocalyptic number.

1366147 is a deficient number, since it is larger than the sum of its proper divisors (17373).

1366147 is an equidigital number, since it uses as much as digits as its factorization.

1366147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17372.

The product of its digits is 3024, while the sum is 28.

The square root of 1366147 is about 1168.8229121642. The cubic root of 1366147 is about 110.9598372134.

The spelling of 1366147 in words is "one million, three hundred sixty-six thousand, one hundred forty-seven".