1364689 has 4 divisors (see below), whose sum is σ = 1367460. Its totient is φ = 1361920.

The previous prime is 1364677. The next prime is 1364717. The reversal of 1364689 is 9864631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 540225 = 908^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1364689 - 2⁹ = 1364177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364609) 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, 424 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (341865).

2^1364689 is an apocalyptic number.

It is an amenable number.

1364689 is a deficient number, since it is larger than the sum of its proper divisors (2771).

1364689 is an equidigital number, since it uses as much as digits as its factorization.

1364689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770.

The product of its digits is 31104, while the sum is 37.

The square root of 1364689 is about 1168.1990412597. The cubic root of 1364689 is about 110.9203497524.

The spelling of 1364689 in words is "one million, three hundred sixty-four thousand, six hundred eighty-nine".