91067090 has 16 divisors (see below), whose sum is σ = 166700160. Its totient is φ = 35809200.

The previous prime is 91067087. The next prime is 91067099. The reversal of 91067090 is 9076019.

It is not an unprimeable number, because it can be changed into a prime (91067099) 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, 76586 + ... + 77765.

It is an arithmetic number, because the mean of its divisors is an integer number (10418760).

Almost surely, 2^91067090 is an apocalyptic number.

91067090 is a deficient number, since it is larger than the sum of its proper divisors (75633070).

91067090 is a wasteful number, since it uses less digits than its factorization.

91067090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154417.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 91067090 is about 9542.9078377610. The cubic root of 91067090 is about 449.9046546969.

The spelling of 91067090 in words is "ninety-one million, sixty-seven thousand, ninety".