91371706 has 8 divisors (see below), whose sum is σ = 137188980. Its totient is φ = 45642048.

The previous prime is 91371701. The next prime is 91371733. The reversal of 91371706 is 60717319.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90421081 + 950625 = 9509^2 + 975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (91371701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19231 + ... + 23506.

Almost surely, 2^91371706 is an apocalyptic number.

91371706 is a deficient number, since it is larger than the sum of its proper divisors (45817274).

91371706 is a wasteful number, since it uses less digits than its factorization.

91371706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43808.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 91371706 is about 9558.8548477315. The cubic root of 91371706 is about 450.4057344783.

The spelling of 91371706 in words is "ninety-one million, three hundred seventy-one thousand, seven hundred six".