83678691 has 8 divisors (see below), whose sum is σ = 112916160. Its totient is φ = 55113512.

The previous prime is 83678681. The next prime is 83678711. The reversal of 83678691 is 19687638.

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

It is a cyclic number.

It is not a de Polignac number, because 83678691 - 2⁶ = 83678627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83678691.

It is not an unprimeable number, because it can be changed into a prime (83678681) 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 7 ways as a sum of consecutive naturals, for example, 167781 + ... + 168278.

It is an arithmetic number, because the mean of its divisors is an integer number (14114520).

Almost surely, 2^83678691 is an apocalyptic number.

83678691 is a deficient number, since it is larger than the sum of its proper divisors (29237469).

83678691 is a wasteful number, since it uses less digits than its factorization.

83678691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336145.

The product of its digits is 435456, while the sum is 48.

The square root of 83678691 is about 9147.6057523267. The cubic root of 83678691 is about 437.3927961550.

The spelling of 83678691 in words is "eighty-three million, six hundred seventy-eight thousand, six hundred ninety-one".