68253780 has 96 divisors (see below), whose sum is σ = 220711680. Its totient is φ = 15436800.

The previous prime is 68253769. The next prime is 68253781. The reversal of 68253780 is 8735286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68253781) 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, 41616 + ... + 43224.

It is an arithmetic number, because the mean of its divisors is an integer number (2299080).

Almost surely, 2^68253780 is an apocalyptic number.

68253780 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 68253780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110355840).

68253780 is an abundant number, since it is smaller than the sum of its proper divisors (152457900).

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

68253780 is a wasteful number, since it uses less digits than its factorization.

68253780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 68253780 is about 8261.5845937689. The cubic root of 68253780 is about 408.6726457254.

The spelling of 68253780 in words is "sixty-eight million, two hundred fifty-three thousand, seven hundred eighty".