1365986 has 16 divisors (see below), whose sum is σ = 2184000. Its totient is φ = 638928.

The previous prime is 1365983. The next prime is 1366009. The reversal of 1365986 is 6895631.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (1365983) 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, 3740 + ... + 4088.

It is an arithmetic number, because the mean of its divisors is an integer number (136500).

2^1365986 is an apocalyptic number.

1365986 is a deficient number, since it is larger than the sum of its proper divisors (818014).

1365986 is a wasteful number, since it uses less digits than its factorization.

1365986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473.

The product of its digits is 38880, while the sum is 38.

The square root of 1365986 is about 1168.7540374262. The cubic root of 1365986 is about 110.9554781814.

The spelling of 1365986 in words is "one million, three hundred sixty-five thousand, nine hundred eighty-six".