6665107537 has 4 divisors (see below), whose sum is σ = 7271026416. Its totient is φ = 6059188660.

The previous prime is 6665107531. The next prime is 6665107577. The reversal of 6665107537 is 7357015666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6665107537 - 2¹⁵ = 6665074769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6665107531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302959423 + ... + 302959444.

It is an arithmetic number, because the mean of its divisors is an integer number (1817756604).

Almost surely, 2^6665107537 is an apocalyptic number.

It is an amenable number.

6665107537 is a deficient number, since it is larger than the sum of its proper divisors (605918879).

6665107537 is a wasteful number, since it uses less digits than its factorization.

6665107537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605918878.

The product of its (nonzero) digits is 793800, while the sum is 46.

The square root of 6665107537 is about 81640.1098541642. The cubic root of 6665107537 is about 1881.9253266038.

The spelling of 6665107537 in words is "six billion, six hundred sixty-five million, one hundred seven thousand, five hundred thirty-seven".