722074217 has 4 divisors (see below), whose sum is σ = 724626000. Its totient is φ = 719522436.

The previous prime is 722074151. The next prime is 722074229. The reversal of 722074217 is 712470227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722074217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722074237) 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, 1275467 + ... + 1276032.

It is an arithmetic number, because the mean of its divisors is an integer number (181156500).

Almost surely, 2^722074217 is an apocalyptic number.

It is an amenable number.

722074217 is a deficient number, since it is larger than the sum of its proper divisors (2551783).

722074217 is a wasteful number, since it uses less digits than its factorization.

722074217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551782.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 722074217 is about 26871.4386849681. The cubic root of 722074217 is about 897.1408098599.

The spelling of 722074217 in words is "seven hundred twenty-two million, seventy-four thousand, two hundred seventeen".