84572881 has 4 divisors (see below), whose sum is σ = 86372352. Its totient is φ = 82773412.

The previous prime is 84572869. The next prime is 84572921. The reversal of 84572881 is 18827548.

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 84572881 - 2⁵ = 84572849 is a prime.

It is a super-2 number, since 2×84572881² = 14305144401280322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84572801) 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, 899665 + ... + 899758.

It is an arithmetic number, because the mean of its divisors is an integer number (21593088).

Almost surely, 2^84572881 is an apocalyptic number.

It is an amenable number.

84572881 is a deficient number, since it is larger than the sum of its proper divisors (1799471).

84572881 is a wasteful number, since it uses less digits than its factorization.

84572881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799470.

The product of its digits is 143360, while the sum is 43.

The square root of 84572881 is about 9196.3515048089. The cubic root of 84572881 is about 438.9452715852.

The spelling of 84572881 in words is "eighty-four million, five hundred seventy-two thousand, eight hundred eighty-one".