722478351 has 32 divisors (see below), whose sum is σ = 1132973568. Its totient is φ = 400982400.

The previous prime is 722478349. The next prime is 722478371. The reversal of 722478351 is 153874227.

It is not a de Polignac number, because 722478351 - 2¹ = 722478349 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722478301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109200 + ... + 115626.

It is an arithmetic number, because the mean of its divisors is an integer number (35405424).

Almost surely, 2^722478351 is an apocalyptic number.

722478351 is a deficient number, since it is larger than the sum of its proper divisors (410495217).

722478351 is a wasteful number, since it uses less digits than its factorization.

722478351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6591.

The product of its digits is 94080, while the sum is 39.

The square root of 722478351 is about 26878.9574016553. The cubic root of 722478351 is about 897.3081506843.

The spelling of 722478351 in words is "seven hundred twenty-two million, four hundred seventy-eight thousand, three hundred fifty-one".