83661123 has 48 divisors (see below), whose sum is σ = 145662720. Its totient is φ = 41477184.

The previous prime is 83661113. The next prime is 83661163. The reversal of 83661123 is 32116638.

It is not a de Polignac number, because 83661123 - 2⁶ = 83661059 is a prime.

It is a super-2 number, since 2×83661123² = 13998367003242258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83661103) 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 47 ways as a sum of consecutive naturals, for example, 658686 + ... + 658812.

It is an arithmetic number, because the mean of its divisors is an integer number (3034640).

Almost surely, 2^83661123 is an apocalyptic number.

83661123 is a deficient number, since it is larger than the sum of its proper divisors (62001597).

83661123 is a wasteful number, since it uses less digits than its factorization.

83661123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 169 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 83661123 is about 9146.6454506557. The cubic root of 83661123 is about 437.3621844012.

The spelling of 83661123 in words is "eighty-three million, six hundred sixty-one thousand, one hundred twenty-three".