68600067840 has 324 divisors, whose sum is σ = 239864009112. Its totient is φ = 18101391360.

The previous prime is 68600067829. The next prime is 68600067857. The reversal of 68600067840 is 4876000686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 197694547 + ... + 197694893.

Almost surely, 2^68600067840 is an apocalyptic number.

68600067840 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 68600067840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119932004556).

68600067840 is an abundant number, since it is smaller than the sum of its proper divisors (171263941272).

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

68600067840 is a wasteful number, since it uses less digits than its factorization.

68600067840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 68600067840 in words is "sixty-eight billion, six hundred million, sixty-seven thousand, eight hundred forty".