68165280 has 192 divisors, whose sum is σ = 246758400. Its totient is φ = 17556480.

The previous prime is 68165269. The next prime is 68165281. The reversal of 68165280 is 8256186.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68165281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133666 + ... + 134174.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^68165280 is an apocalyptic number.

68165280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68165280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123379200).

68165280 is an abundant number, since it is smaller than the sum of its proper divisors (178593120).

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

68165280 is a wasteful number, since it uses less digits than its factorization.

68165280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 68165280 is about 8256.2267410725. The cubic root of 68165280 is about 408.4959367216.

The spelling of 68165280 in words is "sixty-eight million, one hundred sixty-five thousand, two hundred eighty".