6446870 has 8 divisors (see below), whose sum is σ = 11604384. Its totient is φ = 2578744.

The previous prime is 6446863. The next prime is 6446929. The reversal of 6446870 is 786446.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6446870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322334 + ... + 322353.

It is an arithmetic number, because the mean of its divisors is an integer number (1450548).

Almost surely, 2^6446870 is an apocalyptic number.

6446870 is a deficient number, since it is larger than the sum of its proper divisors (5157514).

6446870 is a wasteful number, since it uses less digits than its factorization.

6446870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644694.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 6446870 is about 2539.0687269154. The cubic root of 6446870 is about 186.1156832288.

The spelling of 6446870 in words is "six million, four hundred forty-six thousand, eight hundred seventy".