68053720 has 144 divisors (see below), whose sum is σ = 192525840. Its totient is φ = 21202944.

The previous prime is 68053679. The next prime is 68053721. The reversal of 68053720 is 2735086.

It is a super-3 number, since 3×68053720³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68053721) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2346666 + ... + 2346694.

It is an arithmetic number, because the mean of its divisors is an integer number (1336985).

Almost surely, 2^68053720 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 68053720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96262920).

68053720 is an abundant number, since it is smaller than the sum of its proper divisors (124472120).

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

68053720 is a wasteful number, since it uses less digits than its factorization.

68053720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 68053720 is about 8249.4678616260. The cubic root of 68053720 is about 408.2729654845.

Multiplying 68053720 by its product of nonzero digits (10080), we get a square (685981497600 = 828240²).

The spelling of 68053720 in words is "sixty-eight million, fifty-three thousand, seven hundred twenty".