68034540 has 144 divisors (see below), whose sum is σ = 225342432. Its totient is φ = 15289344.

The previous prime is 68034511. The next prime is 68034569. The reversal of 68034540 is 4543086.

It is an interprime number because it is at equal distance from previous prime (68034511) and next prime (68034569).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 68034498 and 68034507.

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, 214462 + ... + 214778.

It is an arithmetic number, because the mean of its divisors is an integer number (1564878).

Almost surely, 2^68034540 is an apocalyptic number.

68034540 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 68034540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112671216).

68034540 is an abundant number, since it is smaller than the sum of its proper divisors (157307892).

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

68034540 is a wasteful number, since it uses less digits than its factorization.

68034540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 68034540 is about 8248.3052804803. The cubic root of 68034540 is about 408.2346065172.

The spelling of 68034540 in words is "sixty-eight million, thirty-four thousand, five hundred forty".