84323661 has 4 divisors (see below), whose sum is σ = 112431552. Its totient is φ = 56215772.

The previous prime is 84323641. The next prime is 84323669. The reversal of 84323661 is 16632348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84323661 - 2¹¹ = 84321613 is a prime.

It is a super-2 number, since 2×84323661² = 14220959608885842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84323669) 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 3 ways as a sum of consecutive naturals, for example, 14053941 + ... + 14053946.

It is an arithmetic number, because the mean of its divisors is an integer number (28107888).

Almost surely, 2^84323661 is an apocalyptic number.

It is an amenable number.

84323661 is a deficient number, since it is larger than the sum of its proper divisors (28107891).

84323661 is a wasteful number, since it uses less digits than its factorization.

84323661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28107890.

The product of its digits is 20736, while the sum is 33.

The square root of 84323661 is about 9182.7915690165. The cubic root of 84323661 is about 438.5136849668.

The spelling of 84323661 in words is "eighty-four million, three hundred twenty-three thousand, six hundred sixty-one".