68853720 has 256 divisors, whose sum is σ = 246758400. Its totient is φ = 15206400.

The previous prime is 68853713. The next prime is 68853721. The reversal of 68853720 is 2735886.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68853721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 681670 + ... + 681770.

It is an arithmetic number, because the mean of its divisors is an integer number (963900).

Almost surely, 2^68853720 is an apocalyptic number.

68853720 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 68853720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123379200).

68853720 is an abundant number, since it is smaller than the sum of its proper divisors (177904680).

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

68853720 is a wasteful number, since it uses less digits than its factorization.

68853720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 166 counting only the distinct ones).

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

The square root of 68853720 is about 8297.8141700089. The cubic root of 68853720 is about 409.8665439132.

The spelling of 68853720 in words is "sixty-eight million, eight hundred fifty-three thousand, seven hundred twenty".