68885280 has 72 divisors (see below), whose sum is σ = 235075932. Its totient is φ = 18369024.

The previous prime is 68885263. The next prime is 68885281. The reversal of 68885280 is 8258886.

It can be written as a sum of positive squares in 2 ways, for example, as 67174416 + 1710864 = 8196^2 + 1308^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68885281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22479 + ... + 25358.

Almost surely, 2^68885280 is an apocalyptic number.

68885280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68885280 is an abundant number, since it is smaller than the sum of its proper divisors (166190652).

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

68885280 is a wasteful number, since it uses less digits than its factorization.

68885280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47858 (or 47847 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 68885280 is about 8299.7156577801. The cubic root of 68885280 is about 409.9291569052.

The spelling of 68885280 in words is "sixty-eight million, eight hundred eighty-five thousand, two hundred eighty".