1367729 has 4 divisors (see below), whose sum is σ = 1492080. Its totient is φ = 1243380.

The previous prime is 1367713. The next prime is 1367749. The reversal of 1367729 is 9277631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1367729 - 2⁴ = 1367713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1367749) 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, 62159 + ... + 62180.

It is an arithmetic number, because the mean of its divisors is an integer number (373020).

2^1367729 is an apocalyptic number.

It is an amenable number.

1367729 is a deficient number, since it is larger than the sum of its proper divisors (124351).

1367729 is a wasteful number, since it uses less digits than its factorization.

1367729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124350.

The product of its digits is 15876, while the sum is 35.

The square root of 1367729 is about 1169.4994655835. The cubic root of 1367729 is about 111.0026512366.

The spelling of 1367729 in words is "one million, three hundred sixty-seven thousand, seven hundred twenty-nine".