722901 has 4 divisors (see below), whose sum is σ = 963872. Its totient is φ = 481932.

The previous prime is 722899. The next prime is 722903. The reversal of 722901 is 109227.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (722899) and next prime (722903).

It is not a de Polignac number, because 722901 - 2¹ = 722899 is a prime.

It is a super-3 number, since 3×722901³ = 1133333513233196103, which contains 333 as substring.

It is an Ulam number.

It is a D-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 (722903) 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, 120481 + ... + 120486.

It is an arithmetic number, because the mean of its divisors is an integer number (240968).

2⁷²²⁹⁰¹ is an apocalyptic number.

It is an amenable number.

722901 is a deficient number, since it is larger than the sum of its proper divisors (240971).

722901 is a wasteful number, since it uses less digits than its factorization.

722901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240970.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 722901 is about 850.2358496323. The cubic root of 722901 is about 89.7483091319.

The spelling of 722901 in words is "seven hundred twenty-two thousand, nine hundred one".