6516791 has 4 divisors (see below), whose sum is σ = 6859800. Its totient is φ = 6173784.

The previous prime is 6516787. The next prime is 6516833. The reversal of 6516791 is 1976156.

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

It is not a de Polignac number, because 6516791 - 2² = 6516787 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171476 + ... + 171513.

It is an arithmetic number, because the mean of its divisors is an integer number (1714950).

Almost surely, 2^6516791 is an apocalyptic number.

6516791 is a deficient number, since it is larger than the sum of its proper divisors (343009).

6516791 is a wasteful number, since it uses less digits than its factorization.

6516791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343008.

The product of its digits is 11340, while the sum is 35.

The square root of 6516791 is about 2552.8006189282. The cubic root of 6516791 is about 186.7861186261.

The spelling of 6516791 in words is "six million, five hundred sixteen thousand, seven hundred ninety-one".