722478745 has 8 divisors (see below), whose sum is σ = 870863616. Its totient is φ = 575390256.

The previous prime is 722478727. The next prime is 722478751. The reversal of 722478745 is 547874227.

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

It is a cyclic number.

It is not a de Polignac number, because 722478745 - 2²³ = 714090137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722478695 and 722478704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322867 + ... + 325096.

It is an arithmetic number, because the mean of its divisors is an integer number (108857952).

Almost surely, 2^722478745 is an apocalyptic number.

It is an amenable number.

722478745 is a deficient number, since it is larger than the sum of its proper divisors (148384871).

722478745 is a wasteful number, since it uses less digits than its factorization.

722478745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648191.

The product of its digits is 878080, while the sum is 46.

The square root of 722478745 is about 26878.9647308076. The cubic root of 722478745 is about 897.3083137985.

The spelling of 722478745 in words is "seven hundred twenty-two million, four hundred seventy-eight thousand, seven hundred forty-five".