1366829 has 2 divisors, whose sum is σ = 1366830. Its totient is φ = 1366828.

The previous prime is 1366801. The next prime is 1366831. The reversal of 1366829 is 9286631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 9604 = 1165^2 + 98^2 .

It is an emirp because it is prime and its reverse (9286631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366829 is a prime.

Together with 1366831, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683414 + 683415.

It is an arithmetic number, because the mean of its divisors is an integer number (683415).

2^1366829 is an apocalyptic number.

It is an amenable number.

1366829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366829 is an equidigital number, since it uses as much as digits as its factorization.

1366829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 1366829 is about 1169.1146222676. The cubic root of 1366829 is about 110.9782983843.

The spelling of 1366829 in words is "one million, three hundred sixty-six thousand, eight hundred twenty-nine".