68148140 has 24 divisors (see below), whose sum is σ = 143549952. Its totient is φ = 27175680.

The previous prime is 68148133. The next prime is 68148151. The reversal of 68148140 is 4184186.

It is a junction number, because it is equal to n+sod(n) for n = 68148097 and 68148106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685 + ... + 11795.

It is an arithmetic number, because the mean of its divisors is an integer number (5981248).

Almost surely, 2^68148140 is an apocalyptic number.

It is an amenable number.

68148140 is an abundant number, since it is smaller than the sum of its proper divisors (75401812).

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

68148140 is a wasteful number, since it uses less digits than its factorization.

68148140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10457 (or 10455 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 68148140 is about 8255.1886713751. The cubic root of 68148140 is about 408.4616954026.

The spelling of 68148140 in words is "sixty-eight million, one hundred forty-eight thousand, one hundred forty".