68586240 has 144 divisors (see below), whose sum is σ = 223842528. Its totient is φ = 17891328.

The previous prime is 68586239. The next prime is 68586241. The reversal of 68586240 is 4268586.

It is an interprime number because it is at equal distance from previous prime (68586239) and next prime (68586241).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68586241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203352 + ... + 203688.

It is an arithmetic number, because the mean of its divisors is an integer number (1554462).

Almost surely, 2^68586240 is an apocalyptic number.

68586240 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 68586240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111921264).

68586240 is an abundant number, since it is smaller than the sum of its proper divisors (155256288).

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

68586240 is a wasteful number, since it uses less digits than its factorization.

68586240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 68586240 is about 8281.6809887848. The cubic root of 68586240 is about 409.3351111223.

The spelling of 68586240 in words is "sixty-eight million, five hundred eighty-six thousand, two hundred forty".