83611998 has 12 divisors (see below), whose sum is σ = 181159368. Its totient is φ = 27870660.

The previous prime is 83611993. The next prime is 83612033. The reversal of 83611998 is 89911638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83611993) 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 5 ways as a sum of consecutive naturals, for example, 2322538 + ... + 2322573.

It is an arithmetic number, because the mean of its divisors is an integer number (15096614).

Almost surely, 2^83611998 is an apocalyptic number.

83611998 is an abundant number, since it is smaller than the sum of its proper divisors (97547370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83611998 is a wasteful number, since it uses less digits than its factorization.

83611998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645119 (or 4645116 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 83611998 is about 9143.9596455802. The cubic root of 83611998 is about 437.2765626960.

The spelling of 83611998 in words is "eighty-three million, six hundred eleven thousand, nine hundred ninety-eight".