6734639 has 4 divisors (see below), whose sum is σ = 6835224. Its totient is φ = 6634056.

The previous prime is 6734633. The next prime is 6734647. The reversal of 6734639 is 9364376.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6734639 - 2⁸ = 6734383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6734633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50192 + ... + 50325.

It is an arithmetic number, because the mean of its divisors is an integer number (1708806).

Almost surely, 2^6734639 is an apocalyptic number.

6734639 is a deficient number, since it is larger than the sum of its proper divisors (100585).

6734639 is a wasteful number, since it uses less digits than its factorization.

6734639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100584.

The product of its digits is 81648, while the sum is 38.

The square root of 6734639 is about 2595.1183017350. The cubic root of 6734639 is about 188.8446882480.

The spelling of 6734639 in words is "six million, seven hundred thirty-four thousand, six hundred thirty-nine".