6447670 has 8 divisors (see below), whose sum is σ = 11605824. Its totient is φ = 2579064.

The previous prime is 6447653. The next prime is 6447671. The reversal of 6447670 is 767446.

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 (6447671) 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, 322374 + ... + 322393.

It is an arithmetic number, because the mean of its divisors is an integer number (1450728).

Almost surely, 2^6447670 is an apocalyptic number.

6447670 is a deficient number, since it is larger than the sum of its proper divisors (5158154).

6447670 is a wasteful number, since it uses less digits than its factorization.

6447670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644774.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 6447670 is about 2539.2262601037. The cubic root of 6447670 is about 186.1233813515.

It can be divided in two parts, 64476 and 70, that added together give a palindrome (64546).

The spelling of 6447670 in words is "six million, four hundred forty-seven thousand, six hundred seventy".