83935640 has 16 divisors (see below), whose sum is σ = 188855280. Its totient is φ = 33574240.

The previous prime is 83935603. The next prime is 83935667. The reversal of 83935640 is 4653938.

It is a junction number, because it is equal to n+sod(n) for n = 83935594 and 83935603.

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, 1049156 + ... + 1049235.

It is an arithmetic number, because the mean of its divisors is an integer number (11803455).

Almost surely, 2^83935640 is an apocalyptic number.

It is an amenable number.

83935640 is an abundant number, since it is smaller than the sum of its proper divisors (104919640).

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

83935640 is a wasteful number, since it uses less digits than its factorization.

83935640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098402 (or 2098398 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 83935640 is about 9161.6395912522. The cubic root of 83935640 is about 437.8400338816.

The spelling of 83935640 in words is "eighty-three million, nine hundred thirty-five thousand, six hundred forty".