84858691 has 4 divisors (see below), whose sum is σ = 84883032. Its totient is φ = 84834352.

The previous prime is 84858689. The next prime is 84858701. The reversal of 84858691 is 19685848.

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 84858691 - 2¹ = 84858689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84858391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5845 + ... + 14278.

It is an arithmetic number, because the mean of its divisors is an integer number (21220758).

Almost surely, 2^84858691 is an apocalyptic number.

84858691 is a deficient number, since it is larger than the sum of its proper divisors (24341).

84858691 is a wasteful number, since it uses less digits than its factorization.

84858691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24340.

The product of its digits is 552960, while the sum is 49.

The square root of 84858691 is about 9211.8777130398. The cubic root of 84858691 is about 439.4391804613.

The spelling of 84858691 in words is "eighty-four million, eight hundred fifty-eight thousand, six hundred ninety-one".