140806168 has 8 divisors (see below), whose sum is σ = 264011580. Its totient is φ = 70403080.

The previous prime is 140806163. The next prime is 140806181. The reversal of 140806168 is 861608041.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140806163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8800378 + ... + 8800393.

Almost surely, 2^140806168 is an apocalyptic number.

It is an amenable number.

140806168 is a deficient number, since it is larger than the sum of its proper divisors (123205412).

140806168 is a wasteful number, since it uses less digits than its factorization.

140806168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600777 (or 17600773 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 140806168 is about 11866.1774805537. The cubic root of 140806168 is about 520.2441752660.

The spelling of 140806168 in words is "one hundred forty million, eight hundred six thousand, one hundred sixty-eight".