91228606 has 32 divisors (see below), whose sum is σ = 166184640. Its totient is φ = 36723456.

The previous prime is 91228601. The next prime is 91228637. The reversal of 91228606 is 60682219.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91228601) 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 15 ways as a sum of consecutive naturals, for example, 11986 + ... + 18058.

It is an arithmetic number, because the mean of its divisors is an integer number (5193270).

Almost surely, 2^91228606 is an apocalyptic number.

91228606 is a deficient number, since it is larger than the sum of its proper divisors (74956034).

91228606 is a wasteful number, since it uses less digits than its factorization.

91228606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 91228606 is about 9551.3667084873. The cubic root of 91228606 is about 450.1704802622.

The spelling of 91228606 in words is "ninety-one million, two hundred twenty-eight thousand, six hundred six".