6140263221 has 6 divisors (see below), whose sum is σ = 8869269110. Its totient is φ = 4093508808.

The previous prime is 6140263189. The next prime is 6140263243. The reversal of 6140263221 is 1223620416.

6140263221 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 2 + 632 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3613692996 + 2526570225 = 60114^2 + 50265^2 .

It is not a de Polignac number, because 6140263221 - 2⁵ = 6140263189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140263121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341125726 + ... + 341125743.

Almost surely, 2^6140263221 is an apocalyptic number.

It is an amenable number.

6140263221 is a deficient number, since it is larger than the sum of its proper divisors (2729005889).

6140263221 is a wasteful number, since it uses less digits than its factorization.

6140263221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682251475 (or 682251472 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6140263221 is about 78359.8316805237. The cubic root of 6140263221 is about 1831.1713981864.

Adding to 6140263221 its reverse (1223620416), we get a palindrome (7363883637).

It can be divided in two parts, 6140263 and 221, that added together give a square (6140484 = 2478²).

The spelling of 6140263221 in words is "six billion, one hundred forty million, two hundred sixty-three thousand, two hundred twenty-one".