83356561 has 8 divisors (see below), whose sum is σ = 85552064. Its totient is φ = 81187920.

The previous prime is 83356549. The next prime is 83356573. The reversal of 83356561 is 16565338.

It is an interprime number because it is at equal distance from previous prime (83356549) and next prime (83356573).

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

It is a cyclic number.

It is not a de Polignac number, because 83356561 - 2⁷ = 83356433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83356561.

It is not an unprimeable number, because it can be changed into a prime (83356261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351 + ... + 12916.

It is an arithmetic number, because the mean of its divisors is an integer number (10694008).

Almost surely, 2^83356561 is an apocalyptic number.

It is an amenable number.

83356561 is a deficient number, since it is larger than the sum of its proper divisors (2195503).

83356561 is a wasteful number, since it uses less digits than its factorization.

83356561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13431.

The product of its digits is 64800, while the sum is 37.

The square root of 83356561 is about 9129.9814348114. The cubic root of 83356561 is about 436.8308110699.

The spelling of 83356561 in words is "eighty-three million, three hundred fifty-six thousand, five hundred sixty-one".