220140687 has 16 divisors (see below), whose sum is σ = 316412768. Its totient is φ = 135336960.

The previous prime is 220140673. The next prime is 220140709. The reversal of 220140687 is 786041022.

It is not a de Polignac number, because 220140687 - 2⁴ = 220140671 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220140647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49383 + ... + 53655.

It is an arithmetic number, because the mean of its divisors is an integer number (19775798).

Almost surely, 2^220140687 is an apocalyptic number.

220140687 is a deficient number, since it is larger than the sum of its proper divisors (96272081).

220140687 is a wasteful number, since it uses less digits than its factorization.

220140687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 220140687 is about 14837.1387740359. The cubic root of 220140687 is about 603.8097281976.

The spelling of 220140687 in words is "two hundred twenty million, one hundred forty thousand, six hundred eighty-seven".