68008140 has 48 divisors (see below), whose sum is σ = 211582560. Its totient is φ = 18135360.

The previous prime is 68008133. The next prime is 68008147. The reversal of 68008140 is 4180086.

It is an interprime number because it is at equal distance from previous prime (68008133) and next prime (68008147).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68008147) 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, 62431 + ... + 63510.

It is an arithmetic number, because the mean of its divisors is an integer number (4407970).

Almost surely, 2^68008140 is an apocalyptic number.

68008140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68008140 is an abundant number, since it is smaller than the sum of its proper divisors (143574420).

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

68008140 is a wasteful number, since it uses less digits than its factorization.

68008140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125959 (or 125951 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 68008140 is about 8246.7047964626. The cubic root of 68008140 is about 408.1817961461.

The spelling of 68008140 in words is "sixty-eight million, eight thousand, one hundred forty".