722445 has 8 divisors (see below), whose sum is σ = 1155936. Its totient is φ = 385296.

The previous prime is 722431. The next prime is 722459. The reversal of 722445 is 544227.

722445 is nontrivially palindromic in base 2.

It is an interprime number because it is at equal distance from previous prime (722431) and next prime (722459).

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

It is not a de Polignac number, because 722445 - 2⁷ = 722317 is a prime.

722445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24067 + ... + 24096.

It is an arithmetic number, because the mean of its divisors is an integer number (144492).

2⁷²²⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

722445 is a deficient number, since it is larger than the sum of its proper divisors (433491).

722445 is a wasteful number, since it uses less digits than its factorization.

722445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48171.

The product of its digits is 2240, while the sum is 24.

The square root of 722445 is about 849.9676464431. The cubic root of 722445 is about 89.7294343311.

The spelling of 722445 in words is "seven hundred twenty-two thousand, four hundred forty-five".