722910813 has 8 divisors (see below), whose sum is σ = 965776800. Its totient is φ = 480992688.

The previous prime is 722910763. The next prime is 722910821. The reversal of 722910813 is 318019227.

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

It is a de Polignac number, because none of the positive numbers 2^k-722910813 is a prime.

It is a super-3 number, since 3×722910813³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722910913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235183 + ... + 238236.

It is an arithmetic number, because the mean of its divisors is an integer number (120722100).

Almost surely, 2^722910813 is an apocalyptic number.

It is an amenable number.

722910813 is a deficient number, since it is larger than the sum of its proper divisors (242865987).

722910813 is a wasteful number, since it uses less digits than its factorization.

722910813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473931.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 722910813 is about 26887.0008182393. Note that the first 3 decimals coincide. The cubic root of 722910813 is about 897.4871522539.

The spelling of 722910813 in words is "seven hundred twenty-two million, nine hundred ten thousand, eight hundred thirteen".