67897608240 has 320 divisors, whose sum is σ = 264975040512. Its totient is φ = 13971225600.

The previous prime is 67897608239. The next prime is 67897608253. The reversal of 67897608240 is 4280679876.

It is a super-2 number, since 2×67897608240² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1885605 + ... + 1921275.

Almost surely, 2^67897608240 is an apocalyptic number.

67897608240 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 67897608240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132487520256).

67897608240 is an abundant number, since it is smaller than the sum of its proper divisors (197077432272).

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

67897608240 is a wasteful number, since it uses less digits than its factorization.

67897608240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35808 (or 35802 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 67897608240 in words is "sixty-seven billion, eight hundred ninety-seven million, six hundred eight thousand, two hundred forty".