722998305 has 40 divisors (see below), whose sum is σ = 1327682664. Its totient is φ = 376185600.

The previous prime is 722998271. The next prime is 722998343. The reversal of 722998305 is 503899227.

It can be written as a sum of positive squares in 4 ways, for example, as 24770529 + 698227776 = 4977^2 + 26424^2 .

It is not a de Polignac number, because 722998305 - 2¹¹ = 722996257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5166 + ... + 38375.

Almost surely, 2^722998305 is an apocalyptic number.

It is an amenable number.

722998305 is a deficient number, since it is larger than the sum of its proper divisors (604684359).

722998305 is a wasteful number, since it uses less digits than its factorization.

722998305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43599 (or 43590 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 722998305 is about 26888.6278006149. The cubic root of 722998305 is about 897.5233576321.

The spelling of 722998305 in words is "seven hundred twenty-two million, nine hundred ninety-eight thousand, three hundred five".