140618 has 4 divisors (see below), whose sum is σ = 210930. Its totient is φ = 70308.

The previous prime is 140617. The next prime is 140627. The reversal of 140618 is 816041.

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

It can be written as a sum of positive squares in only one way, i.e., 134689 + 5929 = 367^2 + 77^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140618.

It is not an unprimeable number, because it can be changed into a prime (140611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35153 + ... + 35156.

2¹⁴⁰⁶¹⁸ is an apocalyptic number.

140618 is a deficient number, since it is larger than the sum of its proper divisors (70312).

140618 is an equidigital number, since it uses as much as digits as its factorization.

140618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70311.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 140618 is about 374.9906665505. The cubic root of 140618 is about 52.0012327124.

Adding to 140618 its reverse (816041), we get a palindrome (956659).

The spelling of 140618 in words is "one hundred forty thousand, six hundred eighteen".