140001668 has 12 divisors (see below), whose sum is σ = 245113680. Its totient is φ = 69969192.

The previous prime is 140001643. The next prime is 140001677. The reversal of 140001668 is 866100041.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055 + ... + 17217.

It is an arithmetic number, because the mean of its divisors is an integer number (20426140).

Almost surely, 2^140001668 is an apocalyptic number.

It is an amenable number.

140001668 is a deficient number, since it is larger than the sum of its proper divisors (105112012).

140001668 is a wasteful number, since it uses less digits than its factorization.

140001668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15826 (or 15824 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 140001668 is about 11832.2300518541. The cubic root of 140001668 is about 519.2514723389.

The spelling of 140001668 in words is "one hundred forty million, one thousand, six hundred sixty-eight".