6386992 has 40 divisors (see below), whose sum is σ = 13015040. Its totient is φ = 3032640.

The previous prime is 6386981. The next prime is 6387001. The reversal of 6386992 is 2996836.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39103 + ... + 39265.

It is an arithmetic number, because the mean of its divisors is an integer number (325376).

Almost surely, 2^6386992 is an apocalyptic number.

6386992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6386992 is the 1264-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6386992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6507520).

6386992 is an abundant number, since it is smaller than the sum of its proper divisors (6628048).

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

6386992 is a wasteful number, since it uses less digits than its factorization.

6386992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 275 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 6386992 is about 2527.2498887130. The cubic root of 6386992 is about 185.5376809700.

The spelling of 6386992 in words is "six million, three hundred eighty-six thousand, nine hundred ninety-two".