91516970 has 16 divisors (see below), whose sum is σ = 165473280. Its totient is φ = 36441744.

The previous prime is 91516969. The next prime is 91516973. The reversal of 91516970 is 7961519.

It is not an unprimeable number, because it can be changed into a prime (91516973) 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, 18290 + ... + 22749.

It is an arithmetic number, because the mean of its divisors is an integer number (10342080).

Almost surely, 2^91516970 is an apocalyptic number.

91516970 is a deficient number, since it is larger than the sum of its proper divisors (73956310).

91516970 is a wasteful number, since it uses less digits than its factorization.

91516970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41269.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 91516970 is about 9566.4502298397. The cubic root of 91516970 is about 450.6442951861.

The spelling of 91516970 in words is "ninety-one million, five hundred sixteen thousand, nine hundred seventy".