722951 has 4 divisors (see below), whose sum is σ = 746304. Its totient is φ = 699600.

The previous prime is 722933. The next prime is 722963. The reversal of 722951 is 159227.

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-722951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11630 + ... + 11691.

It is an arithmetic number, because the mean of its divisors is an integer number (186576).

2⁷²²⁹⁵¹ is an apocalyptic number.

722951 is a deficient number, since it is larger than the sum of its proper divisors (23353).

722951 is a wasteful number, since it uses less digits than its factorization.

722951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352.

The product of its digits is 1260, while the sum is 26.

The square root of 722951 is about 850.2652527300. The cubic root of 722951 is about 89.7503782543.

The spelling of 722951 in words is "seven hundred twenty-two thousand, nine hundred fifty-one".