91683742 has 4 divisors (see below), whose sum is σ = 137525616. Its totient is φ = 45841870.

The previous prime is 91683731. The next prime is 91683763. The reversal of 91683742 is 24738619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24738619 = 149 ⋅166031.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 91683695 and 91683704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22920934 + ... + 22920937.

It is an arithmetic number, because the mean of its divisors is an integer number (34381404).

Almost surely, 2^91683742 is an apocalyptic number.

91683742 is a deficient number, since it is larger than the sum of its proper divisors (45841874).

91683742 is a wasteful number, since it uses less digits than its factorization.

91683742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45841873.

The product of its digits is 72576, while the sum is 40.

The square root of 91683742 is about 9575.1627662406. The cubic root of 91683742 is about 450.9178664696.

The spelling of 91683742 in words is "ninety-one million, six hundred eighty-three thousand, seven hundred forty-two".