722747 has 4 divisors (see below), whose sum is σ = 730296. Its totient is φ = 715200.

The previous prime is 722737. The next prime is 722749. The reversal of 722747 is 747227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3629 + ... + 3822.

It is an arithmetic number, because the mean of its divisors is an integer number (182574).

2⁷²²⁷⁴⁷ is an apocalyptic number.

722747 is a deficient number, since it is larger than the sum of its proper divisors (7549).

722747 is an equidigital number, since it uses as much as digits as its factorization.

722747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7548.

The product of its digits is 5488, while the sum is 29.

The square root of 722747 is about 850.1452817019. The cubic root of 722747 is about 89.7419356353.

The spelling of 722747 in words is "seven hundred twenty-two thousand, seven hundred forty-seven", and thus it is an iban number.