68190080 has 128 divisors (see below), whose sum is σ = 192706560. Its totient is φ = 22579200.

The previous prime is 68190071. The next prime is 68190151. The reversal of 68190080 is 8009186.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138635 + ... + 139125.

It is an arithmetic number, because the mean of its divisors is an integer number (1505520).

Almost surely, 2^68190080 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 68190080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96353280).

68190080 is an abundant number, since it is smaller than the sum of its proper divisors (124516480).

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

68190080 is a wasteful number, since it uses less digits than its factorization.

68190080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 68190080 is about 8257.7285012284. The cubic root of 68190080 is about 408.5454705942.

The spelling of 68190080 in words is "sixty-eight million, one hundred ninety thousand, eighty".