91608000 has 224 divisors, whose sum is σ = 330939648. Its totient is φ = 22144000.

The previous prime is 91607969. The next prime is 91608037. The reversal of 91608000 is 80619.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263827 + ... + 264173.

Almost surely, 2^91608000 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 91608000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165469824).

91608000 is an abundant number, since it is smaller than the sum of its proper divisors (239331648).

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

91608000 is a wasteful number, since it uses less digits than its factorization.

91608000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 91608000 is about 9571.2068204590. The cubic root of 91608000 is about 450.7936611322.

Adding to 91608000 its reverse (80619), we get a palindrome (91688619).

The spelling of 91608000 in words is "ninety-one million, six hundred eight thousand".