6334640 has 40 divisors (see below), whose sum is σ = 15863568. Its totient is φ = 2338560.

The previous prime is 6334639. The next prime is 6334651. The reversal of 6334640 is 464336.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 2006 + ... + 4085.

Almost surely, 2^6334640 is an apocalyptic number.

It is an amenable number.

6334640 is an abundant number, since it is smaller than the sum of its proper divisors (9528928).

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

6334640 is a wasteful number, since it uses less digits than its factorization.

6334640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117 (or 6111 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 6334640 is about 2516.8710733766. The cubic root of 6334640 is about 185.0293598399.

Adding to 6334640 its reverse (464336), we get a palindrome (6798976).

The spelling of 6334640 in words is "six million, three hundred thirty-four thousand, six hundred forty".