6739445 has 8 divisors (see below), whose sum is σ = 8104536. Its totient is φ = 5380096.

The previous prime is 6739423. The next prime is 6739451. The reversal of 6739445 is 5449376.

It can be written as a sum of positive squares in 4 ways, for example, as 2172676 + 4566769 = 1474^2 + 2137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6739445 - 2¹⁸ = 6477301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6739399 and 6739408.

It is a congruent number.

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, 1829 + ... + 4101.

It is an arithmetic number, because the mean of its divisors is an integer number (1013067).

Almost surely, 2^6739445 is an apocalyptic number.

It is an amenable number.

6739445 is a deficient number, since it is larger than the sum of its proper divisors (1365091).

6739445 is a wasteful number, since it uses less digits than its factorization.

6739445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871.

The product of its digits is 90720, while the sum is 38.

The square root of 6739445 is about 2596.0441059427. The cubic root of 6739445 is about 188.8895989336.

The spelling of 6739445 in words is "six million, seven hundred thirty-nine thousand, four hundred forty-five".