91840634 has 8 divisors (see below), whose sum is σ = 137833920. Its totient is φ = 45895996.

The previous prime is 91840627. The next prime is 91840657. The reversal of 91840634 is 43604819.

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

It is a junction number, because it is equal to n+sod(n) for n = 91840594 and 91840603.

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, 7004 + ... + 15255.

It is an arithmetic number, because the mean of its divisors is an integer number (17229240).

Almost surely, 2^91840634 is an apocalyptic number.

91840634 is a deficient number, since it is larger than the sum of its proper divisors (45993286).

91840634 is a wasteful number, since it uses less digits than its factorization.

91840634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24324.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 91840634 is about 9583.3519188226. The cubic root of 91840634 is about 451.1749280045.

The spelling of 91840634 in words is "ninety-one million, eight hundred forty thousand, six hundred thirty-four".