6660670 has 8 divisors (see below), whose sum is σ = 11989224. Its totient is φ = 2664264.

The previous prime is 6660649. The next prime is 6660677. The reversal of 6660670 is 760666.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660677) 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, 333024 + ... + 333043.

It is an arithmetic number, because the mean of its divisors is an integer number (1498653).

Almost surely, 2^6660670 is an apocalyptic number.

6660670 is a deficient number, since it is larger than the sum of its proper divisors (5328554).

6660670 is a wasteful number, since it uses less digits than its factorization.

6660670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666074.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 6660670 is about 2580.8273867115. The cubic root of 6660670 is about 188.1507580540.

The spelling of 6660670 in words is "six million, six hundred sixty thousand, six hundred seventy".