68562780 has 192 divisors, whose sum is σ = 230985216. Its totient is φ = 14976000.

The previous prime is 68562743. The next prime is 68562799. The reversal of 68562780 is 8726586.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 523315 + ... + 523445.

It is an arithmetic number, because the mean of its divisors is an integer number (1203048).

Almost surely, 2^68562780 is an apocalyptic number.

68562780 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 68562780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115492608).

68562780 is an abundant number, since it is smaller than the sum of its proper divisors (162422436).

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

68562780 is a wasteful number, since it uses less digits than its factorization.

68562780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68562780 is about 8280.2644885293. The cubic root of 68562780 is about 409.2884346226.

The spelling of 68562780 in words is "sixty-eight million, five hundred sixty-two thousand, seven hundred eighty".