91463680 has 224 divisors, whose sum is σ = 283098240. Its totient is φ = 27525120.

The previous prime is 91463657. The next prime is 91463683. The reversal of 91463680 is 8636419.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91463683) 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, 3153906 + ... + 3153934.

Almost surely, 2^91463680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91463680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141549120).

91463680 is an abundant number, since it is smaller than the sum of its proper divisors (191634560).

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

91463680 is a wasteful number, since it uses less digits than its factorization.

91463680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 91463680 is about 9563.6645696093. The cubic root of 91463680 is about 450.5568086895.

The spelling of 91463680 in words is "ninety-one million, four hundred sixty-three thousand, six hundred eighty".