1722367 has 4 divisors (see below), whose sum is σ = 1725696. Its totient is φ = 1719040.

The previous prime is 1722359. The next prime is 1722373. The reversal of 1722367 is 7632271.

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

It is a cyclic number.

It is not a de Polignac number, because 1722367 - 2³ = 1722359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722307) 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, 703 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (431424).

2^1722367 is an apocalyptic number.

1722367 is a deficient number, since it is larger than the sum of its proper divisors (3329).

1722367 is an equidigital number, since it uses as much as digits as its factorization.

1722367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328.

The product of its digits is 3528, while the sum is 28.

The square root of 1722367 is about 1312.3898048979. The cubic root of 1722367 is about 119.8694645371.

The spelling of 1722367 in words is "one million, seven hundred twenty-two thousand, three hundred sixty-seven".