140663066 has 8 divisors (see below), whose sum is σ = 223406100. Its totient is φ = 66194368.

The previous prime is 140663053. The next prime is 140663069. The reversal of 140663066 is 660366041.

It can be written as a sum of positive squares in 2 ways, for example, as 138744841 + 1918225 = 11779^2 + 1385^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (140663069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2068541 + ... + 2068608.

Almost surely, 2^140663066 is an apocalyptic number.

140663066 is a deficient number, since it is larger than the sum of its proper divisors (82743034).

140663066 is a wasteful number, since it uses less digits than its factorization.

140663066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137168.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 140663066 is about 11860.1461205164. The cubic root of 140663066 is about 520.0678732903.

The spelling of 140663066 in words is "one hundred forty million, six hundred sixty-three thousand, sixty-six".