68409180 has 72 divisors (see below), whose sum is σ = 237156192. Its totient is φ = 15636096.

The previous prime is 68409179. The next prime is 68409221. The reversal of 68409180 is 8190486.

It is a happy number.

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, 25887 + ... + 28406.

It is an arithmetic number, because the mean of its divisors is an integer number (3293836).

Almost surely, 2^68409180 is an apocalyptic number.

68409180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68409180 is an abundant number, since it is smaller than the sum of its proper divisors (168747012).

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

68409180 is a wasteful number, since it uses less digits than its factorization.

68409180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54315 (or 54310 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 68409180 is about 8270.9842219654. The cubic root of 68409180 is about 408.9825655176.

The spelling of 68409180 in words is "sixty-eight million, four hundred nine thousand, one hundred eighty".