91068004 has 24 divisors (see below), whose sum is σ = 166735800. Its totient is φ = 43464960.

The previous prime is 91067993. The next prime is 91068013. The reversal of 91068004 is 40086019.

It can be written as a sum of positive squares in 4 ways, for example, as 8294400 + 82773604 = 2880^2 + 9098^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5914 + ... + 14734.

It is an arithmetic number, because the mean of its divisors is an integer number (6947325).

Almost surely, 2^91068004 is an apocalyptic number.

It is an amenable number.

91068004 is a deficient number, since it is larger than the sum of its proper divisors (75667796).

91068004 is a wasteful number, since it uses less digits than its factorization.

91068004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943 (or 8941 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 91068004 is about 9542.9557266080. The cubic root of 91068004 is about 449.9061598564.

The spelling of 91068004 in words is "ninety-one million, sixty-eight thousand, four".