6734456789 has 4 divisors (see below), whose sum is σ = 7130601324. Its totient is φ = 6338312256.

The previous prime is 6734456783. The next prime is 6734456849. The reversal of 6734456789 is 9876544376.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4758654289 + 1975802500 = 68983^2 + 44450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6734456789 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 (6734456783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198072242 + ... + 198072275.

It is an arithmetic number, because the mean of its divisors is an integer number (1782650331).

Almost surely, 2^6734456789 is an apocalyptic number.

It is an amenable number.

6734456789 is a deficient number, since it is larger than the sum of its proper divisors (396144535).

6734456789 is a wasteful number, since it uses less digits than its factorization.

6734456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396144534.

The product of its digits is 30481920, while the sum is 59.

The square root of 6734456789 is about 82063.7361384430. The cubic root of 6734456789 is about 1888.4298511836.

The spelling of 6734456789 in words is "six billion, seven hundred thirty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".