6391956 has 12 divisors (see below), whose sum is σ = 14914592. Its totient is φ = 2130648.

The previous prime is 6391939. The next prime is 6391963. The reversal of 6391956 is 6591936.

It is a tau number, because it is divible by the number of its divisors (12).

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, 266320 + ... + 266343.

Almost surely, 2^6391956 is an apocalyptic number.

It is an amenable number.

6391956 is an abundant number, since it is smaller than the sum of its proper divisors (8522636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6391956 is a wasteful number, since it uses less digits than its factorization.

6391956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532670 (or 532668 counting only the distinct ones).

The product of its digits is 43740, while the sum is 39.

The square root of 6391956 is about 2528.2317931709. The cubic root of 6391956 is about 185.5857354401.

The spelling of 6391956 in words is "six million, three hundred ninety-one thousand, nine hundred fifty-six".