68600040 has 64 divisors (see below), whose sum is σ = 207662400. Its totient is φ = 18127872.

The previous prime is 68600039. The next prime is 68600087. The reversal of 68600040 is 4000686.

It is a super-4 number, since 4×68600040⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11031 + ... + 16089.

It is an arithmetic number, because the mean of its divisors is an integer number (3244725).

Almost surely, 2^68600040 is an apocalyptic number.

68600040 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 68600040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103831200).

68600040 is an abundant number, since it is smaller than the sum of its proper divisors (139062360).

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

68600040 is a wasteful number, since it uses less digits than its factorization.

68600040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186 (or 5182 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 68600040 is about 8282.5141110656. The cubic root of 68600040 is about 409.3625629149.

The spelling of 68600040 in words is "sixty-eight million, six hundred thousand, forty".