83685504 has 128 divisors (see below), whose sum is σ = 256942080. Its totient is φ = 23639040.

The previous prime is 83685487. The next prime is 83685517. The reversal of 83685504 is 40558638.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438049 + ... + 438239.

It is an arithmetic number, because the mean of its divisors is an integer number (2007360).

Almost surely, 2^83685504 is an apocalyptic number.

83685504 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83685504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128471040).

83685504 is an abundant number, since it is smaller than the sum of its proper divisors (173256576).

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

83685504 is a wasteful number, since it uses less digits than its factorization.

83685504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 83685504 is about 9147.9781372716. The cubic root of 83685504 is about 437.4046664659.

The spelling of 83685504 in words is "eighty-three million, six hundred eighty-five thousand, five hundred four".