68746880 has 64 divisors (see below), whose sum is σ = 165607200. Its totient is φ = 27288576.

The previous prime is 68746879. The next prime is 68746889. The reversal of 68746880 is 8864786.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×68746880² = 9452267019468800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68746889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103991 + ... + 104649.

Almost surely, 2^68746880 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 68746880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82803600).

68746880 is an abundant number, since it is smaller than the sum of its proper divisors (96860320).

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

68746880 is a wasteful number, since it uses less digits than its factorization.

68746880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 68746880 is about 8291.3738306749. The cubic root of 68746880 is about 409.6544381584.

The spelling of 68746880 in words is "sixty-eight million, seven hundred forty-six thousand, eight hundred eighty".