6349881 has 4 divisors (see below), whose sum is σ = 8466512. Its totient is φ = 4233252.

The previous prime is 6349879. The next prime is 6349897. The reversal of 6349881 is 1889436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6349881 - 2¹ = 6349879 is a prime.

It is a super-2 number, since 2×6349881² = 80641977428322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

6349881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6349181) 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, 1058311 + ... + 1058316.

It is an arithmetic number, because the mean of its divisors is an integer number (2116628).

Almost surely, 2^6349881 is an apocalyptic number.

It is an amenable number.

6349881 is a deficient number, since it is larger than the sum of its proper divisors (2116631).

6349881 is a wasteful number, since it uses less digits than its factorization.

6349881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116630.

The product of its digits is 41472, while the sum is 39.

The square root of 6349881 is about 2519.8970217055. The cubic root of 6349881 is about 185.1776331355.

The spelling of 6349881 in words is "six million, three hundred forty-nine thousand, eight hundred eighty-one".