722778522 has 16 divisors (see below), whose sum is σ = 1446857760. Its totient is φ = 240709392.

The previous prime is 722778499. The next prime is 722778527. The reversal of 722778522 is 225877227.

722778522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (722778527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46897 + ... + 60372.

It is an arithmetic number, because the mean of its divisors is an integer number (90428610).

Almost surely, 2^722778522 is an apocalyptic number.

722778522 is an abundant number, since it is smaller than the sum of its proper divisors (724079238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722778522 is a wasteful number, since it uses less digits than its factorization.

722778522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108397.

The product of its digits is 219520, while the sum is 42.

The square root of 722778522 is about 26884.5405763238. The cubic root of 722778522 is about 897.4324028925.

The spelling of 722778522 in words is "seven hundred twenty-two million, seven hundred seventy-eight thousand, five hundred twenty-two".