90404068 has 12 divisors (see below), whose sum is σ = 159607980. Its totient is φ = 44801792.

The previous prime is 90404063. The next prime is 90404089. The reversal of 90404068 is 86040409.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 86899684 = 1872^2 + 9322^2 .

90404068 is a modest number, since divided by 4068 gives 904 as remainder.

It is not an unprimeable number, because it can be changed into a prime (90404063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99553 + ... + 100456.

It is an arithmetic number, because the mean of its divisors is an integer number (13300665).

Almost surely, 2^90404068 is an apocalyptic number.

It is an amenable number.

90404068 is a deficient number, since it is larger than the sum of its proper divisors (69203912).

90404068 is a wasteful number, since it uses less digits than its factorization.

90404068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200126 (or 200124 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 90404068 is about 9508.1053843550. The cubic root of 90404068 is about 448.8101372685.

The spelling of 90404068 in words is "ninety million, four hundred four thousand, sixty-eight".