68780178 has 48 divisors (see below), whose sum is σ = 156243360. Its totient is φ = 22674816.

The previous prime is 68780111. The next prime is 68780183. The reversal of 68780178 is 87108786.

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, 46413 + ... + 47871.

It is an arithmetic number, because the mean of its divisors is an integer number (3255070).

Almost surely, 2^68780178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68780178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78121680).

68780178 is an abundant number, since it is smaller than the sum of its proper divisors (87463182).

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

68780178 is a wasteful number, since it uses less digits than its factorization.

68780178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 68780178 is about 8293.3815781019. The cubic root of 68780178 is about 409.7205670831.

The spelling of 68780178 in words is "sixty-eight million, seven hundred eighty thousand, one hundred seventy-eight".