83861504 has 56 divisors (see below), whose sum is σ = 173987460. Its totient is φ = 40370176.

The previous prime is 83861443. The next prime is 83861513. The reversal of 83861504 is 40516838.

It can be written as a sum of positive squares in 2 ways, for example, as 83759104 + 102400 = 9152^2 + 320^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237392 + ... + 237744.

Almost surely, 2^83861504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83861504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86993730).

83861504 is an abundant number, since it is smaller than the sum of its proper divisors (90125956).

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

83861504 is an equidigital number, since it uses as much as digits as its factorization.

83861504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 83861504 is about 9157.5926967735. The cubic root of 83861504 is about 437.7110887751.

The spelling of 83861504 in words is "eighty-three million, eight hundred sixty-one thousand, five hundred four".