68199936 has 80 divisors (see below), whose sum is σ = 207677184. Its totient is φ = 19482624.

The previous prime is 68199931. The next prime is 68199979. The reversal of 68199936 is 63999186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68199931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7581 + ... + 13923.

Almost surely, 2^68199936 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 68199936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103838592).

68199936 is an abundant number, since it is smaller than the sum of its proper divisors (139477248).

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

68199936 is an equidigital number, since it uses as much as digits as its factorization.

68199936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371 (or 6355 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 68199936 is about 8258.3252539483. The cubic root of 68199936 is about 408.5651529790.

The spelling of 68199936 in words is "sixty-eight million, one hundred ninety-nine thousand, nine hundred thirty-six".