84081611 has 4 divisors (see below), whose sum is σ = 86132424. Its totient is φ = 82030800.

The previous prime is 84081589. The next prime is 84081623. The reversal of 84081611 is 11618048.

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 84081611 - 2²² = 79887307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84081671) 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, 1025345 + ... + 1025426.

It is an arithmetic number, because the mean of its divisors is an integer number (21533106).

Almost surely, 2^84081611 is an apocalyptic number.

84081611 is a deficient number, since it is larger than the sum of its proper divisors (2050813).

84081611 is a wasteful number, since it uses less digits than its factorization.

84081611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050812.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 84081611 is about 9169.6025540914. The cubic root of 84081611 is about 438.0937001985.

Adding to 84081611 its reverse (11618048), we get a palindrome (95699659).

The spelling of 84081611 in words is "eighty-four million, eighty-one thousand, six hundred eleven".