83663140 has 24 divisors (see below), whose sum is σ = 191665152. Its totient is φ = 30422880.

The previous prime is 83663131. The next prime is 83663161. The reversal of 83663140 is 4136638.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 189924 + ... + 190363.

It is an arithmetic number, because the mean of its divisors is an integer number (7986048).

Almost surely, 2^83663140 is an apocalyptic number.

It is an amenable number.

83663140 is an abundant number, since it is smaller than the sum of its proper divisors (108002012).

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

83663140 is a wasteful number, since it uses less digits than its factorization.

83663140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380307 (or 380305 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 83663140 is about 9146.7557089932. The cubic root of 83663140 is about 437.3656991856.

Adding to 83663140 its reverse (4136638), we get a palindrome (87799778).

The spelling of 83663140 in words is "eighty-three million, six hundred sixty-three thousand, one hundred forty".