6670739 has 4 divisors (see below), whose sum is σ = 6796656. Its totient is φ = 6544824.

The previous prime is 6670709. The next prime is 6670751. The reversal of 6670739 is 9370766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6670739 is a prime.

It is a super-2 number, since 2×6670739² = 88997517612242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6670709) 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, 62879 + ... + 62984.

It is an arithmetic number, because the mean of its divisors is an integer number (1699164).

Almost surely, 2^6670739 is an apocalyptic number.

6670739 is a deficient number, since it is larger than the sum of its proper divisors (125917).

6670739 is a wasteful number, since it uses less digits than its factorization.

6670739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125916.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 6670739 is about 2582.7773810377. Note that the first 3 decimals coincide. The cubic root of 6670739 is about 188.2455200997.

The spelling of 6670739 in words is "six million, six hundred seventy thousand, seven hundred thirty-nine".