140566673 has 4 divisors (see below), whose sum is σ = 151379508. Its totient is φ = 129753840.

The previous prime is 140566667. The next prime is 140566681. The reversal of 140566673 is 376665041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68095504 + 72471169 = 8252^2 + 8513^2 .

It is a cyclic number.

It is not a de Polignac number, because 140566673 - 2⁶ = 140566609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140569673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5406398 + ... + 5406423.

It is an arithmetic number, because the mean of its divisors is an integer number (37844877).

Almost surely, 2^140566673 is an apocalyptic number.

140566673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140566673 is a deficient number, since it is larger than the sum of its proper divisors (10812835).

140566673 is a wasteful number, since it uses less digits than its factorization.

140566673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812834.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 140566673 is about 11856.0816883151. The cubic root of 140566673 is about 519.9490494951.

The spelling of 140566673 in words is "one hundred forty million, five hundred sixty-six thousand, six hundred seventy-three".