83004640 has 24 divisors (see below), whose sum is σ = 196098840. Its totient is φ = 33201792.

The previous prime is 83004629. The next prime is 83004661. The reversal of 83004640 is 4640038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259230 + ... + 259549.

It is an arithmetic number, because the mean of its divisors is an integer number (8170785).

Almost surely, 2^83004640 is an apocalyptic number.

83004640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

83004640 is an abundant number, since it is smaller than the sum of its proper divisors (113094200).

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

83004640 is a wasteful number, since it uses less digits than its factorization.

83004640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518794 (or 518786 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 83004640 is about 9110.6882286686. The cubic root of 83004640 is about 436.2151955113.

Adding to 83004640 its reverse (4640038), we get a palindrome (87644678).

The spelling of 83004640 in words is "eighty-three million, four thousand, six hundred forty".