6749864 has 48 divisors (see below), whose sum is σ = 14683200. Its totient is φ = 2898720.

The previous prime is 6749861. The next prime is 6749887. The reversal of 6749864 is 4689476.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (6749861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18209 + ... + 18575.

It is an arithmetic number, because the mean of its divisors is an integer number (305900).

Almost surely, 2^6749864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6749864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7341600).

6749864 is an abundant number, since it is smaller than the sum of its proper divisors (7933336).

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

6749864 is a wasteful number, since it uses less digits than its factorization.

6749864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 399 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 6749864 is about 2598.0500380093. The cubic root of 6749864 is about 188.9868882219.

The spelling of 6749864 in words is "six million, seven hundred forty-nine thousand, eight hundred sixty-four".