140607218 has 4 divisors (see below), whose sum is σ = 210910830. Its totient is φ = 70303608.

The previous prime is 140607191. The next prime is 140607241. The reversal of 140607218 is 812706041.

140607218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812706041 = 7 ⋅116100863.

It can be written as a sum of positive squares in only one way, i.e., 140588449 + 18769 = 11857^2 + 137^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35151803 + ... + 35151806.

Almost surely, 2^140607218 is an apocalyptic number.

140607218 is a deficient number, since it is larger than the sum of its proper divisors (70303612).

140607218 is an equidigital number, since it uses as much as digits as its factorization.

140607218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70303611.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 140607218 is about 11857.7914469770. The cubic root of 140607218 is about 519.9990359943. Note that the first 3 decimals are identical.

The spelling of 140607218 in words is "one hundred forty million, six hundred seven thousand, two hundred eighteen".