68700280 has 64 divisors (see below), whose sum is σ = 169711200. Its totient is φ = 24821760.

The previous prime is 68700253. The next prime is 68700299. The reversal of 68700280 is 8200786.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84516 + ... + 85324.

Almost surely, 2^68700280 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 68700280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84855600).

68700280 is an abundant number, since it is smaller than the sum of its proper divisors (101010920).

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

68700280 is a wasteful number, since it uses less digits than its factorization.

68700280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 68700280 is about 8288.5632048021. The cubic root of 68700280 is about 409.5618559603.

The spelling of 68700280 in words is "sixty-eight million, seven hundred thousand, two hundred eighty".