6140866221 has 12 divisors (see below), whose sum is σ = 10137303072. Its totient is φ = 3509066376.

The previous prime is 6140866219. The next prime is 6140866223. The reversal of 6140866221 is 1226680416.

It is an interprime number because it is at equal distance from previous prime (6140866219) and next prime (6140866223).

It is not a de Polignac number, because 6140866221 - 2¹ = 6140866219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140866223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48736971 + ... + 48737096.

It is an arithmetic number, because the mean of its divisors is an integer number (844775256).

Almost surely, 2^6140866221 is an apocalyptic number.

It is an amenable number.

6140866221 is a deficient number, since it is larger than the sum of its proper divisors (3996436851).

6140866221 is a wasteful number, since it uses less digits than its factorization.

6140866221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97474080 (or 97474077 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 6140866221 is about 78363.6792206696. The cubic root of 6140866221 is about 1831.2313391677.

The spelling of 6140866221 in words is "six billion, one hundred forty million, eight hundred sixty-six thousand, two hundred twenty-one".