722545663 has 8 divisors (see below), whose sum is σ = 826302080. Its totient is φ = 618923160.

The previous prime is 722545633. The next prime is 722545693. The reversal of 722545663 is 366545227.

It is an interprime number because it is at equal distance from previous prime (722545633) and next prime (722545693).

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 722545663 - 2¹⁷ = 722414591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722545633) 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, 21633 + ... + 43738.

It is an arithmetic number, because the mean of its divisors is an integer number (103287760).

Almost surely, 2^722545663 is an apocalyptic number.

722545663 is a deficient number, since it is larger than the sum of its proper divisors (103756417).

722545663 is a wasteful number, since it uses less digits than its factorization.

722545663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66957.

The product of its digits is 302400, while the sum is 40.

The square root of 722545663 is about 26880.2095043919. The cubic root of 722545663 is about 897.3360166776.

The spelling of 722545663 in words is "seven hundred twenty-two million, five hundred forty-five thousand, six hundred sixty-three".