91698147 has 12 divisors (see below), whose sum is σ = 134268264. Its totient is φ = 60294240.

The previous prime is 91698127. The next prime is 91698149. The reversal of 91698147 is 74189619.

It is a happy number.

It is not a de Polignac number, because 91698147 - 2⁶ = 91698083 is a prime.

It is a super-4 number, since 4×91698147⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (91698149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69129 + ... + 70442.

It is an arithmetic number, because the mean of its divisors is an integer number (11189022).

Almost surely, 2^91698147 is an apocalyptic number.

91698147 is a deficient number, since it is larger than the sum of its proper divisors (42570117).

91698147 is a wasteful number, since it uses less digits than its factorization.

91698147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139650 (or 139647 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 91698147 is about 9575.9149432313. The cubic root of 91698147 is about 450.9414807316.

The spelling of 91698147 in words is "ninety-one million, six hundred ninety-eight thousand, one hundred forty-seven".