6541664037 has 8 divisors (see below), whose sum is σ = 8734991904. Its totient is φ = 4354722768.

The previous prime is 6541663991. The next prime is 6541664083. The reversal of 6541664037 is 7304661456.

It is an interprime number because it is at equal distance from previous prime (6541663991) and next prime (6541664083).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6541664037 - 2¹² = 6541659941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6541664037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541664137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1594258 + ... + 1598355.

It is an arithmetic number, because the mean of its divisors is an integer number (1091873988).

Almost surely, 2^6541664037 is an apocalyptic number.

It is an amenable number.

6541664037 is a deficient number, since it is larger than the sum of its proper divisors (2193327867).

6541664037 is a wasteful number, since it uses less digits than its factorization.

6541664037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193299.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 6541664037 is about 80880.5541338584. The cubic root of 6541664037 is about 1870.2345628344.

The spelling of 6541664037 in words is "six billion, five hundred forty-one million, six hundred sixty-four thousand, thirty-seven".