83627561 has 16 divisors (see below), whose sum is σ = 89232000. Its totient is φ = 78236928.

The previous prime is 83627549. The next prime is 83627581. The reversal of 83627561 is 16572638.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83627561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83627521) 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 15 ways as a sum of consecutive naturals, for example, 247985 + ... + 248321.

It is an arithmetic number, because the mean of its divisors is an integer number (5577000).

Almost surely, 2^83627561 is an apocalyptic number.

It is an amenable number.

83627561 is a deficient number, since it is larger than the sum of its proper divisors (5604439).

83627561 is a wasteful number, since it uses less digits than its factorization.

83627561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 60480, while the sum is 38.

The square root of 83627561 is about 9144.8106049278. The cubic root of 83627561 is about 437.3036916293.

The spelling of 83627561 in words is "eighty-three million, six hundred twenty-seven thousand, five hundred sixty-one".