84565572 has 216 divisors, whose sum is σ = 266366016. Its totient is φ = 20756736.

The previous prime is 84565571. The next prime is 84565573. The reversal of 84565572 is 27556548.

It is an interprime number because it is at equal distance from previous prime (84565571) and next prime (84565573).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (84565571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2285538 + ... + 2285574.

It is an arithmetic number, because the mean of its divisors is an integer number (1233176).

Almost surely, 2^84565572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84565572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133183008).

84565572 is an abundant number, since it is smaller than the sum of its proper divisors (181800444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84565572 is a wasteful number, since it uses less digits than its factorization.

84565572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 85 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 84565572 is about 9195.9541103683. The cubic root of 84565572 is about 438.9326263046.

It can be divided in two parts, 8456 and 5572, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 84565572 in words is "eighty-four million, five hundred sixty-five thousand, five hundred seventy-two".