83564481 has 32 divisors (see below), whose sum is σ = 149603328. Its totient is φ = 40069440.

The previous prime is 83564443. The next prime is 83564491. The reversal of 83564481 is 18446538.

It is not a de Polignac number, because 83564481 - 2⁷ = 83564353 is a prime.

It is a super-2 number, since 2×83564481² = 13966044969598722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (83564431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10911 + ... + 16916.

It is an arithmetic number, because the mean of its divisors is an integer number (4675104).

Almost surely, 2^83564481 is an apocalyptic number.

It is an amenable number.

83564481 is a deficient number, since it is larger than the sum of its proper divisors (66038847).

83564481 is a wasteful number, since it uses less digits than its factorization.

83564481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27861.

The product of its digits is 92160, while the sum is 39.

The square root of 83564481 is about 9141.3610037018. The cubic root of 83564481 is about 437.1937117167.

The spelling of 83564481 in words is "eighty-three million, five hundred sixty-four thousand, four hundred eighty-one".