84074181 has 8 divisors (see below), whose sum is σ = 112388640. Its totient is φ = 55904592.

The previous prime is 84074171. The next prime is 84074191. The reversal of 84074181 is 18147048.

It is an interprime number because it is at equal distance from previous prime (84074171) and next prime (84074191).

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

It is not a de Polignac number, because 84074181 - 2¹¹ = 84072133 is a prime.

It is a super-2 number, since 2×84074181² = 14136935821641522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84074171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34855 + ... + 37188.

It is an arithmetic number, because the mean of its divisors is an integer number (14048580).

Almost surely, 2^84074181 is an apocalyptic number.

It is an amenable number.

84074181 is a deficient number, since it is larger than the sum of its proper divisors (28314459).

84074181 is a wasteful number, since it uses less digits than its factorization.

84074181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72435.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 84074181 is about 9169.1974021721. The cubic root of 84074181 is about 438.0807955453.

It can be divided in two parts, 84074 and 181, that added together give a triangular number (84255 = T₄₁₀).

The spelling of 84074181 in words is "eighty-four million, seventy-four thousand, one hundred eighty-one".