84101691 has 4 divisors (see below), whose sum is σ = 112135592. Its totient is φ = 56067792.

The previous prime is 84101651. The next prime is 84101713. The reversal of 84101691 is 19610148.

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

It is not a de Polignac number, because 84101691 - 2¹⁷ = 83970619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84101651) 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, 14016946 + ... + 14016951.

It is an arithmetic number, because the mean of its divisors is an integer number (28033898).

Almost surely, 2^84101691 is an apocalyptic number.

84101691 is a deficient number, since it is larger than the sum of its proper divisors (28033901).

84101691 is a wasteful number, since it uses less digits than its factorization.

84101691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28033900.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 84101691 is about 9170.6974107753. The cubic root of 84101691 is about 438.1285719586.

It can be divided in two parts, 8410 and 1691, that added together give a palindrome (10101).

The spelling of 84101691 in words is "eighty-four million, one hundred one thousand, six hundred ninety-one".