722208013 has 4 divisors (see below), whose sum is σ = 723086368. Its totient is φ = 721329660.

The previous prime is 722207951. The next prime is 722208037. The reversal of 722208013 is 310802227.

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-722208013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722208043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437943 + ... + 439588.

It is an arithmetic number, because the mean of its divisors is an integer number (180771592).

Almost surely, 2^722208013 is an apocalyptic number.

It is an amenable number.

722208013 is a deficient number, since it is larger than the sum of its proper divisors (878355).

722208013 is an equidigital number, since it uses as much as digits as its factorization.

722208013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878354.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 722208013 is about 26873.9281274621. The cubic root of 722208013 is about 897.1962180326.

The spelling of 722208013 in words is "seven hundred twenty-two million, two hundred eight thousand, thirteen".