91064207 has 16 divisors (see below), whose sum is σ = 104079360. Its totient is φ = 78980832.

The previous prime is 91064201. The next prime is 91064209. The reversal of 91064207 is 70246019.

It is a cyclic number.

It is not a de Polignac number, because 91064207 - 2¹⁰ = 91063183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91064207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91064201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29918 + ... + 32820.

It is an arithmetic number, because the mean of its divisors is an integer number (6504960).

Almost surely, 2^91064207 is an apocalyptic number.

91064207 is a deficient number, since it is larger than the sum of its proper divisors (13015153).

91064207 is a wasteful number, since it uses less digits than its factorization.

91064207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3062.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 91064207 is about 9542.7567819787. The cubic root of 91064207 is about 449.8999069562.

The spelling of 91064207 in words is "ninety-one million, sixty-four thousand, two hundred seven".