6739445845 has 32 divisors (see below), whose sum is σ = 9107531136. Its totient is φ = 4744454400.

The previous prime is 6739445827. The next prime is 6739445851. The reversal of 6739445845 is 5485449376.

It is a de Polignac number, because none of the positive numbers 2^k-6739445845 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 392490 + ... + 409300.

It is an arithmetic number, because the mean of its divisors is an integer number (284610348).

Almost surely, 2^6739445845 is an apocalyptic number.

It is an amenable number.

6739445845 is a deficient number, since it is larger than the sum of its proper divisors (2368085291).

6739445845 is a wasteful number, since it uses less digits than its factorization.

6739445845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17061.

The product of its digits is 14515200, while the sum is 55.

The square root of 6739445845 is about 82094.1279568764. The cubic root of 6739445845 is about 1888.8960682804.

The spelling of 6739445845 in words is "six billion, seven hundred thirty-nine million, four hundred forty-five thousand, eight hundred forty-five".