91606680 has 192 divisors, whose sum is σ = 336117600. Its totient is φ = 22176000.

The previous prime is 91606673. The next prime is 91606729. The reversal of 91606680 is 8660619.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130330 + ... + 131030.

Almost surely, 2^91606680 is an apocalyptic number.

91606680 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91606680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168058800).

91606680 is an abundant number, since it is smaller than the sum of its proper divisors (244510920).

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

91606680 is a wasteful number, since it uses less digits than its factorization.

91606680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 91606680 is about 9571.1378633891. The cubic root of 91606680 is about 450.7914959265.

The spelling of 91606680 in words is "ninety-one million, six hundred six thousand, six hundred eighty".