722746478 has 8 divisors (see below), whose sum is σ = 1104574968. Its totient is φ = 354554824.

The previous prime is 722746477. The next prime is 722746481. The reversal of 722746478 is 874647227.

722746478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×722746478² = 1044724942922808968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722746477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3409076 + ... + 3409287.

It is an arithmetic number, because the mean of its divisors is an integer number (138071871).

Almost surely, 2^722746478 is an apocalyptic number.

722746478 is a deficient number, since it is larger than the sum of its proper divisors (381828490).

722746478 is a wasteful number, since it uses less digits than its factorization.

722746478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818418.

The product of its digits is 1053696, while the sum is 47.

The square root of 722746478 is about 26883.9446138397. The cubic root of 722746478 is about 897.4191403010.

The spelling of 722746478 in words is "seven hundred twenty-two million, seven hundred forty-six thousand, four hundred seventy-eight".