90777722 has 16 divisors (see below), whose sum is σ = 164773440. Its totient is φ = 36616128.

The previous prime is 90777721. The next prime is 90777767. The reversal of 90777722 is 22777709.

It is a self number, because there is not a number n which added to its sum of digits gives 90777722.

It is not an unprimeable number, because it can be changed into a prime (90777721) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 190472 + ... + 190947.

It is an arithmetic number, because the mean of its divisors is an integer number (10298340).

Almost surely, 2^90777722 is an apocalyptic number.

90777722 is a deficient number, since it is larger than the sum of its proper divisors (73995718).

90777722 is a wasteful number, since it uses less digits than its factorization.

90777722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381445.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 90777722 is about 9527.7343581777. The cubic root of 90777722 is about 449.4276212411.

The spelling of 90777722 in words is "ninety million, seven hundred seventy-seven thousand, seven hundred twenty-two".