722516145 has 32 divisors (see below), whose sum is σ = 1275329664. Its totient is φ = 347020800.

The previous prime is 722516129. The next prime is 722516153. The reversal of 722516145 is 541615227.

It is not a de Polignac number, because 722516145 - 2⁴ = 722516129 is a prime.

It is a super-2 number, since 2×722516145² = 1044059159571322050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37191 + ... + 53180.

It is an arithmetic number, because the mean of its divisors is an integer number (39854052).

Almost surely, 2^722516145 is an apocalyptic number.

It is an amenable number.

722516145 is a deficient number, since it is larger than the sum of its proper divisors (552813519).

722516145 is a wasteful number, since it uses less digits than its factorization.

722516145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90433.

The product of its digits is 16800, while the sum is 33.

The square root of 722516145 is about 26879.6604331230. The cubic root of 722516145 is about 897.3237969538.

The spelling of 722516145 in words is "seven hundred twenty-two million, five hundred sixteen thousand, one hundred forty-five".