722618545 has 32 divisors (see below), whose sum is σ = 998686080. Its totient is φ = 496419840.

The previous prime is 722618543. The next prime is 722618573. The reversal of 722618545 is 545816227.

It is not a de Polignac number, because 722618545 - 2¹ = 722618543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722618498 and 722618507.

It is not an unprimeable number, because it can be changed into a prime (722618543) 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, 451687 + ... + 453283.

It is an arithmetic number, because the mean of its divisors is an integer number (31208940).

Almost surely, 2^722618545 is an apocalyptic number.

It is an amenable number.

722618545 is a deficient number, since it is larger than the sum of its proper divisors (276067535).

722618545 is a wasteful number, since it uses less digits than its factorization.

722618545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065.

The product of its digits is 134400, while the sum is 40.

The square root of 722618545 is about 26881.5651516053. The cubic root of 722618545 is about 897.3661866023.

The spelling of 722618545 in words is "seven hundred twenty-two million, six hundred eighteen thousand, five hundred forty-five".