68269740 has 144 divisors (see below), whose sum is σ = 242694144. Its totient is φ = 14179200.

The previous prime is 68269693. The next prime is 68269771. The reversal of 68269740 is 4796286.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 68269692 and 68269701.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31285 + ... + 33395.

It is an arithmetic number, because the mean of its divisors is an integer number (1685376).

Almost surely, 2^68269740 is an apocalyptic number.

68269740 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 68269740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121347072).

68269740 is an abundant number, since it is smaller than the sum of its proper divisors (174424404).

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

68269740 is a wasteful number, since it uses less digits than its factorization.

68269740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 68269740 is about 8262.5504537037. The cubic root of 68269740 is about 408.7044969874.

The spelling of 68269740 in words is "sixty-eight million, two hundred sixty-nine thousand, seven hundred forty".