83897856 has 300 divisors, whose sum is σ = 304011048. Its totient is φ = 22560768.

The previous prime is 83897831. The next prime is 83897857. The reversal of 83897856 is 65879838.

It is a happy number.

It is a super-3 number, since 3×83897856³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83897857) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4935160 + ... + 4935176.

Almost surely, 2^83897856 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 83897856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152005524).

83897856 is an abundant number, since it is smaller than the sum of its proper divisors (220113192).

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

83897856 is an equidigital number, since it uses as much as digits as its factorization.

83897856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 29 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 83897856 is about 9159.5772828226. The cubic root of 83897856 is about 437.7743254776.

The spelling of 83897856 in words is "eighty-three million, eight hundred ninety-seven thousand, eight hundred fifty-six".