722247 has 8 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 456120.

The previous prime is 722243. The next prime is 722257. The reversal of 722247 is 742227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 722247 - 2² = 722243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722243) 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, 6279 + ... + 6392.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2⁷²²²⁴⁷ is an apocalyptic number.

722247 is a deficient number, since it is larger than the sum of its proper divisors (291513).

722247 is a wasteful number, since it uses less digits than its factorization.

722247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12693.

The product of its digits is 1568, while the sum is 24.

The square root of 722247 is about 849.8511634398. The cubic root of 722247 is about 89.7212362208.

It can be divided in two parts, 722 and 247, that added together give a palindrome (969).

The spelling of 722247 in words is "seven hundred twenty-two thousand, two hundred forty-seven", and thus it is an iban number.