6355986 has 48 divisors (see below), whose sum is σ = 15934464. Its totient is φ = 1675296.

The previous prime is 6355963. The next prime is 6355997. The reversal of 6355986 is 6895536.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2991 + ... + 4653.

It is an arithmetic number, because the mean of its divisors is an integer number (331968).

Almost surely, 2^6355986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6355986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7967232).

6355986 is an abundant number, since it is smaller than the sum of its proper divisors (9578478).

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

6355986 is a wasteful number, since it uses less digits than its factorization.

6355986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1688 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 6355986 is about 2521.1080897098. The cubic root of 6355986 is about 185.2369595669.

The spelling of 6355986 in words is "six million, three hundred fifty-five thousand, nine hundred eighty-six".