722213073 has 18 divisors (see below), whose sum is σ = 1069283462. Its totient is φ = 469722240.

The previous prime is 722213069. The next prime is 722213077. The reversal of 722213073 is 370312227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (722213069) and next prime (722213077).

It can be written as a sum of positive squares in 3 ways, for example, as 136960209 + 585252864 = 11703^2 + 24192^2 .

It is not a de Polignac number, because 722213073 - 2² = 722213069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722213077) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8740 + ... + 38997.

Almost surely, 2^722213073 is an apocalyptic number.

It is an amenable number.

722213073 is a deficient number, since it is larger than the sum of its proper divisors (347070389).

722213073 is a wasteful number, since it uses less digits than its factorization.

722213073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47825 (or 47781 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 722213073 is about 26874.0222705869. The cubic root of 722213073 is about 897.1983133671.

The spelling of 722213073 in words is "seven hundred twenty-two million, two hundred thirteen thousand, seventy-three".