68380880 has 40 divisors (see below), whose sum is σ = 159778464. Its totient is φ = 27216000.

The previous prime is 68380877. The next prime is 68380883. The reversal of 68380880 is 8808386.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68380877) and next prime (68380883).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68380883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14855 + ... + 18905.

Almost surely, 2^68380880 is an apocalyptic number.

68380880 is the 6752-nd pentagonal number.

It is an amenable number.

68380880 is an abundant number, since it is smaller than the sum of its proper divisors (91397584).

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

68380880 is a wasteful number, since it uses less digits than its factorization.

68380880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275 (or 4269 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 68380880 is about 8269.2732449714. The cubic root of 68380880 is about 408.9261607924.

The spelling of 68380880 in words is "sixty-eight million, three hundred eighty thousand, eight hundred eighty".