6660973 has 4 divisors (see below), whose sum is σ = 7266528. Its totient is φ = 6055420.

The previous prime is 6660967. The next prime is 6660977. The reversal of 6660973 is 3790666.

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 a de Polignac number, because none of the positive numbers 2^k-6660973 is a prime.

It is a super-2 number, since 2×6660973² = 88737122613458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302761 + ... + 302782.

It is an arithmetic number, because the mean of its divisors is an integer number (1816632).

Almost surely, 2^6660973 is an apocalyptic number.

It is an amenable number.

6660973 is a deficient number, since it is larger than the sum of its proper divisors (605555).

6660973 is a wasteful number, since it uses less digits than its factorization.

6660973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605554.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 6660973 is about 2580.8860881488. The cubic root of 6660973 is about 188.1536110611.

The spelling of 6660973 in words is "six million, six hundred sixty thousand, nine hundred seventy-three".