68667140 has 48 divisors (see below), whose sum is σ = 153014400. Its totient is φ = 25811712.

The previous prime is 68667103. The next prime is 68667211. The reversal of 68667140 is 4176686.

It is a super-2 number, since 2×68667140² = 9430352231559200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 68667094 and 68667103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51401 + ... + 52719.

It is an arithmetic number, because the mean of its divisors is an integer number (3187800).

Almost surely, 2^68667140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68667140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76507200).

68667140 is an abundant number, since it is smaller than the sum of its proper divisors (84347260).

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

68667140 is a wasteful number, since it uses less digits than its factorization.

68667140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 68667140 is about 8286.5638234433. The cubic root of 68667140 is about 409.4959898389.

The spelling of 68667140 in words is "sixty-eight million, six hundred sixty-seven thousand, one hundred forty".