6440024061 has 12 divisors (see below), whose sum is σ = 9305774400. Its totient is φ = 4291725960.

The previous prime is 6440024057. The next prime is 6440024093. The reversal of 6440024061 is 1604200446.

It is not a de Polignac number, because 6440024061 - 2² = 6440024057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440024021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109911 + ... + 157988.

It is an arithmetic number, because the mean of its divisors is an integer number (775481200).

Almost surely, 2^6440024061 is an apocalyptic number.

It is an amenable number.

6440024061 is a deficient number, since it is larger than the sum of its proper divisors (2865750339).

6440024061 is a wasteful number, since it uses less digits than its factorization.

6440024061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270576 (or 270573 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6440024061 is about 80249.7605043155. The cubic root of 6440024061 is about 1860.4978107359.

The spelling of 6440024061 in words is "six billion, four hundred forty million, twenty-four thousand, sixty-one".