1365977 has 2 divisors, whose sum is σ = 1365978. Its totient is φ = 1365976.

The previous prime is 1365919. The next prime is 1365979. The reversal of 1365977 is 7795631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 292681 = 1036^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365977 - 2⁶ = 1365913 is a prime.

Together with 1365979, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1365977.

It is not a weakly prime, because it can be changed into another prime (1365979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682988 + 682989.

It is an arithmetic number, because the mean of its divisors is an integer number (682989).

2^1365977 is an apocalyptic number.

It is an amenable number.

1365977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365977 is an equidigital number, since it uses as much as digits as its factorization.

1365977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39690, while the sum is 38.

The square root of 1365977 is about 1168.7501871658. The cubic root of 1365977 is about 110.9552344987.

The spelling of 1365977 in words is "one million, three hundred sixty-five thousand, nine hundred seventy-seven".