1366947 has 6 divisors (see below), whose sum is σ = 1974492. Its totient is φ = 911292.

The previous prime is 1366943. The next prime is 1366957. The reversal of 1366947 is 7496631.

It is not a de Polignac number, because 1366947 - 2² = 1366943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75933 + ... + 75950.

It is an arithmetic number, because the mean of its divisors is an integer number (329082).

2^1366947 is an apocalyptic number.

1366947 is a deficient number, since it is larger than the sum of its proper divisors (607545).

1366947 is a wasteful number, since it uses less digits than its factorization.

1366947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151889 (or 151886 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 1366947 is about 1169.1650867179. The cubic root of 1366947 is about 110.9814919227.

The spelling of 1366947 in words is "one million, three hundred sixty-six thousand, nine hundred forty-seven".