91850970 has 32 divisors (see below), whose sum is σ = 223737408. Its totient is φ = 24127488.

The previous prime is 91850963. The next prime is 91850977. The reversal of 91850970 is 7905819.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91850963) and next prime (91850977).

It is not an unprimeable number, because it can be changed into a prime (91850977) 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, 20839 + ... + 24858.

It is an arithmetic number, because the mean of its divisors is an integer number (6991794).

Almost surely, 2^91850970 is an apocalyptic number.

91850970 is an abundant number, since it is smaller than the sum of its proper divisors (131886438).

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

91850970 is a wasteful number, since it uses less digits than its factorization.

91850970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45774.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 91850970 is about 9583.8911721701. The cubic root of 91850970 is about 451.1918528627.

The spelling of 91850970 in words is "ninety-one million, eight hundred fifty thousand, nine hundred seventy".