91869606 has 16 divisors (see below), whose sum is σ = 204154800. Its totient is φ = 30623184.

The previous prime is 91869601. The next prime is 91869619. The reversal of 91869606 is 60696819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91869601) 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, 850591 + ... + 850698.

It is an arithmetic number, because the mean of its divisors is an integer number (12759675).

Almost surely, 2^91869606 is an apocalyptic number.

91869606 is an abundant number, since it is smaller than the sum of its proper divisors (112285194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91869606 is a wasteful number, since it uses less digits than its factorization.

91869606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701300 (or 1701294 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 91869606 is about 9584.8633793080. The cubic root of 91869606 is about 451.2223654882. Note that the first 3 decimals are identical.

The spelling of 91869606 in words is "ninety-one million, eight hundred sixty-nine thousand, six hundred six".