91070616 has 256 divisors, whose sum is σ = 306432000. Its totient is φ = 22353408.

The previous prime is 91070599. The next prime is 91070659. The reversal of 91070616 is 61607019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2461350 + ... + 2461386.

It is an arithmetic number, because the mean of its divisors is an integer number (1197000).

Almost surely, 2^91070616 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 91070616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153216000).

91070616 is an abundant number, since it is smaller than the sum of its proper divisors (215361384).

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

91070616 is a wasteful number, since it uses less digits than its factorization.

91070616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 91070616 is about 9543.0925805003. The cubic root of 91070616 is about 449.9104611975.

The spelling of 91070616 in words is "ninety-one million, seventy thousand, six hundred sixteen".