6660037 has 4 divisors (see below), whose sum is σ = 6840076. Its totient is φ = 6480000.

The previous prime is 6660029. The next prime is 6660061. The reversal of 6660037 is 7300666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7300666 = 2 ⋅3650333.

It can be written as a sum of positive squares in 2 ways, for example, as 6395841 + 264196 = 2529^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 6660037 - 2³ = 6660029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6659987 and 6660014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660337) 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, 89964 + ... + 90037.

It is an arithmetic number, because the mean of its divisors is an integer number (1710019).

Almost surely, 2^6660037 is an apocalyptic number.

It is an amenable number.

6660037 is a deficient number, since it is larger than the sum of its proper divisors (180039).

6660037 is a wasteful number, since it uses less digits than its factorization.

6660037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180038.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 6660037 is about 2580.7047487072. The cubic root of 6660037 is about 188.1447975324.

The spelling of 6660037 in words is "six million, six hundred sixty thousand, thirty-seven".