722896 has 10 divisors (see below), whose sum is σ = 1400642. Its totient is φ = 361440.

The previous prime is 722881. The next prime is 722899. The reversal of 722896 is 698227.

722896 = T₁₄₉ + T₁₅₀ + ... + T₁₉₆.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 287296 = 660^2 + 536^2 .

It is a super-3 number, since 3×722896³ = 1133309997032337408, which contains 333 as substring.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 22575 + ... + 22606.

2⁷²²⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

722896 is a deficient number, since it is larger than the sum of its proper divisors (677746).

722896 is a wasteful number, since it uses less digits than its factorization.

722896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45189 (or 45183 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 722896 is about 850.2329092666. The cubic root of 722896 is about 89.7481022144.

The spelling of 722896 in words is "seven hundred twenty-two thousand, eight hundred ninety-six".