140163665 has 32 divisors (see below), whose sum is σ = 183143040. Its totient is φ = 102928320.

The previous prime is 140163649. The next prime is 140163721. The reversal of 140163665 is 566361041.

It is not a de Polignac number, because 140163665 - 2⁴ = 140163649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091962 + ... + 2092028.

It is an arithmetic number, because the mean of its divisors is an integer number (5723220).

Almost surely, 2^140163665 is an apocalyptic number.

It is an amenable number.

140163665 is a deficient number, since it is larger than the sum of its proper divisors (42979375).

140163665 is an frugal number, since it uses more digits than its factorization.

140163665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 140163665 is about 11839.0736546404. The cubic root of 140163665 is about 519.4516717569.

The spelling of 140163665 in words is "one hundred forty million, one hundred sixty-three thousand, six hundred sixty-five".