83646138 has 8 divisors (see below), whose sum is σ = 167292288. Its totient is φ = 27882044.

The previous prime is 83646131. The next prime is 83646139. The reversal of 83646138 is 83164638.

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

83646138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83646096 and 83646105.

It is not an unprimeable number, because it can be changed into a prime (83646131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6970506 + ... + 6970517.

It is an arithmetic number, because the mean of its divisors is an integer number (20911536).

Almost surely, 2^83646138 is an apocalyptic number.

83646138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83646138 is a wasteful number, since it uses less digits than its factorization.

83646138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13941028.

The product of its digits is 82944, while the sum is 39.

The square root of 83646138 is about 9145.8262611970. The cubic root of 83646138 is about 437.3360700666.

The spelling of 83646138 in words is "eighty-three million, six hundred forty-six thousand, one hundred thirty-eight".