68180992 has 44 divisors (see below), whose sum is σ = 148710456. Its totient is φ = 30986240.

The previous prime is 68180969. The next prime is 68181007. The reversal of 68180992 is 29908186.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (44).

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, 8238 + ... + 14290.

Almost surely, 2^68180992 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 68180992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74355228).

68180992 is an abundant number, since it is smaller than the sum of its proper divisors (80529464).

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

68180992 is a wasteful number, since it uses less digits than its factorization.

68180992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084 (or 6066 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 68180992 is about 8257.1782105027. The cubic root of 68180992 is about 408.5273202211.

The spelling of 68180992 in words is "sixty-eight million, one hundred eighty thousand, nine hundred ninety-two".