722136545 has 8 divisors (see below), whose sum is σ = 933222696. Its totient is φ = 533270016.

The previous prime is 722136533. The next prime is 722136563. The reversal of 722136545 is 545631227.

It can be written as a sum of positive squares in 4 ways, for example, as 161772961 + 560363584 = 12719^2 + 23672^2 .

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 722136545 - 2²⁴ = 705359329 is a prime.

It is a Duffinian number.

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, 5554832 + ... + 5554961.

It is an arithmetic number, because the mean of its divisors is an integer number (116652837).

Almost surely, 2^722136545 is an apocalyptic number.

It is an amenable number.

722136545 is a deficient number, since it is larger than the sum of its proper divisors (211086151).

722136545 is a wasteful number, since it uses less digits than its factorization.

722136545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109811.

The product of its digits is 50400, while the sum is 35.

The square root of 722136545 is about 26872.5984043226. The cubic root of 722136545 is about 897.1666222497.

The spelling of 722136545 in words is "seven hundred twenty-two million, one hundred thirty-six thousand, five hundred forty-five".