6740815 has 8 divisors (see below), whose sum is σ = 8115408. Its totient is φ = 5375040.

The previous prime is 6740813. The next prime is 6740819. The reversal of 6740815 is 5180476.

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

It is not a de Polignac number, because 6740815 - 2¹ = 6740813 is a prime.

It is a Duffinian number.

6740815 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6740813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382 + ... + 3691.

It is an arithmetic number, because the mean of its divisors is an integer number (1014426).

Almost surely, 2^6740815 is an apocalyptic number.

6740815 is a deficient number, since it is larger than the sum of its proper divisors (1374593).

6740815 is a wasteful number, since it uses less digits than its factorization.

6740815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 6740815 is about 2596.3079555399. The cubic root of 6740815 is about 188.9023972782.

The spelling of 6740815 in words is "six million, seven hundred forty thousand, eight hundred fifteen".