6659972 has 24 divisors (see below), whose sum is σ = 13269312. Its totient is φ = 2895200.

The previous prime is 6659957. The next prime is 6659977. The reversal of 6659972 is 2799566.

6659972 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2279 + ... + 4302.

It is an arithmetic number, because the mean of its divisors is an integer number (552888).

Almost surely, 2^6659972 is an apocalyptic number.

It is an amenable number.

6659972 is a deficient number, since it is larger than the sum of its proper divisors (6609340).

6659972 is a wasteful number, since it uses less digits than its factorization.

6659972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619 (or 6617 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 6659972 is about 2580.6921552173. The cubic root of 6659972 is about 188.1441854511.

The spelling of 6659972 in words is "six million, six hundred fifty-nine thousand, nine hundred seventy-two".