68150880 has 144 divisors (see below), whose sum is σ = 265827744. Its totient is φ = 15575040.

The previous prime is 68150843. The next prime is 68150911. The reversal of 68150880 is 8805186.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6700 + ... + 13460.

It is an arithmetic number, because the mean of its divisors is an integer number (1846026).

Almost surely, 2^68150880 is an apocalyptic number.

68150880 is a gapful number since it is divisible by the number (60) 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 68150880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132913872).

68150880 is an abundant number, since it is smaller than the sum of its proper divisors (197676864).

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

68150880 is a wasteful number, since it uses less digits than its factorization.

68150880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789 (or 6778 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 68150880 is about 8255.3546259382. The cubic root of 68150880 is about 408.4671696046.

The spelling of 68150880 in words is "sixty-eight million, one hundred fifty thousand, eight hundred eighty".