722893 has 4 divisors (see below), whose sum is σ = 760960. Its totient is φ = 684828.

The previous prime is 722881. The next prime is 722899. The reversal of 722893 is 398227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722899) 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, 19005 + ... + 19042.

It is an arithmetic number, because the mean of its divisors is an integer number (190240).

2⁷²²⁸⁹³ is an apocalyptic number.

It is an amenable number.

722893 is a deficient number, since it is larger than the sum of its proper divisors (38067).

722893 is a wasteful number, since it uses less digits than its factorization.

722893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38066.

The product of its digits is 6048, while the sum is 31.

The square root of 722893 is about 850.2311450423. The cubic root of 722893 is about 89.7479780635.

The spelling of 722893 in words is "seven hundred twenty-two thousand, eight hundred ninety-three".