68354280 has 240 divisors, whose sum is σ = 247399020. Its totient is φ = 16920576.

The previous prime is 68354233. The next prime is 68354291. The reversal of 68354280 is 8245386.

It can be written as a sum of positive squares in 6 ways, for example, as 51065316 + 17288964 = 7146^2 + 4158^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 936324 + ... + 936396.

Almost surely, 2^68354280 is an apocalyptic number.

68354280 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 68354280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123699510).

68354280 is an abundant number, since it is smaller than the sum of its proper divisors (179044740).

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

68354280 is a wasteful number, since it uses less digits than its factorization.

68354280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 68354280 is about 8267.6647246971. The cubic root of 68354280 is about 408.8731301469.

The spelling of 68354280 in words is "sixty-eight million, three hundred fifty-four thousand, two hundred eighty".