1360721 has 4 divisors (see below), whose sum is σ = 1376100. Its totient is φ = 1345344.

The previous prime is 1360699. The next prime is 1360729. The reversal of 1360721 is 1270631.

It is a happy number.

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 541696 + 819025 = 736^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1360721 - 2¹⁴ = 1344337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1360693 and 1360702.

It is not an unprimeable number, because it can be changed into a prime (1360729) 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, 7556 + ... + 7733.

It is an arithmetic number, because the mean of its divisors is an integer number (344025).

2^1360721 is an apocalyptic number.

It is an amenable number.

1360721 is a deficient number, since it is larger than the sum of its proper divisors (15379).

1360721 is an equidigital number, since it uses as much as digits as its factorization.

1360721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15378.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1360721 is about 1166.4994642090. The cubic root of 1360721 is about 110.8127405664.

The spelling of 1360721 in words is "one million, three hundred sixty thousand, seven hundred twenty-one".