83855707 has 4 divisors (see below), whose sum is σ = 90306160. Its totient is φ = 77405256.

The previous prime is 83855641. The next prime is 83855731. The reversal of 83855707 is 70755838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83855707 - 2¹⁵ = 83822939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83855507) 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 3 ways as a sum of consecutive naturals, for example, 3225207 + ... + 3225232.

It is an arithmetic number, because the mean of its divisors is an integer number (22576540).

Almost surely, 2^83855707 is an apocalyptic number.

83855707 is a deficient number, since it is larger than the sum of its proper divisors (6450453).

83855707 is a wasteful number, since it uses less digits than its factorization.

83855707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450452.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 83855707 is about 9157.2761779909. The cubic root of 83855707 is about 437.7010028218.

The spelling of 83855707 in words is "eighty-three million, eight hundred fifty-five thousand, seven hundred seven".