91689614 has 8 divisors (see below), whose sum is σ = 137575560. Its totient is φ = 45831096.

The previous prime is 91689583. The next prime is 91689623. The reversal of 91689614 is 41698619.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7592 + ... + 15524.

It is an arithmetic number, because the mean of its divisors is an integer number (17196945).

Almost surely, 2^91689614 is an apocalyptic number.

91689614 is a deficient number, since it is larger than the sum of its proper divisors (45885946).

91689614 is a wasteful number, since it uses less digits than its factorization.

91689614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714.

The product of its digits is 93312, while the sum is 44.

The square root of 91689614 is about 9575.4693879726. The cubic root of 91689614 is about 450.9274927971.

The spelling of 91689614 in words is "ninety-one million, six hundred eighty-nine thousand, six hundred fourteen".