140800666 has 8 divisors (see below), whose sum is σ = 213292404. Its totient is φ = 69703200.

The previous prime is 140800661. The next prime is 140800669. The reversal of 140800666 is 666008041.

It can be written as a sum of positive squares in 2 ways, for example, as 101425041 + 39375625 = 10071^2 + 6275^2 .

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 (140800661) 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, 348315 + ... + 348718.

Almost surely, 2^140800666 is an apocalyptic number.

140800666 is a deficient number, since it is larger than the sum of its proper divisors (72491738).

140800666 is a wasteful number, since it uses less digits than its factorization.

140800666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697136.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 140800666 is about 11865.9456428891. The cubic root of 140800666 is about 520.2373989986.

The spelling of 140800666 in words is "one hundred forty million, eight hundred thousand, six hundred sixty-six".