722285737 has 4 divisors (see below), whose sum is σ = 722675716. Its totient is φ = 721895760.

The previous prime is 722285723. The next prime is 722285797. The reversal of 722285737 is 737582227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 737582227 = 5939 ⋅124193.

It can be written as a sum of positive squares in 2 ways, for example, as 12809241 + 709476496 = 3579^2 + 26636^2 .

It is a cyclic number.

It is not a de Polignac number, because 722285737 - 2²⁷ = 588068009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722285693 and 722285702.

It is not an unprimeable number, because it can be changed into a prime (722285797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192198 + ... + 195919.

It is an arithmetic number, because the mean of its divisors is an integer number (180668929).

Almost surely, 2^722285737 is an apocalyptic number.

It is an amenable number.

722285737 is a deficient number, since it is larger than the sum of its proper divisors (389979).

722285737 is a wasteful number, since it uses less digits than its factorization.

722285737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389978.

The product of its digits is 329280, while the sum is 43.

The square root of 722285737 is about 26875.3741741394. The cubic root of 722285737 is about 897.2284022861.

The spelling of 722285737 in words is "seven hundred twenty-two million, two hundred eighty-five thousand, seven hundred thirty-seven".