6516423 has 16 divisors (see below), whose sum is σ = 10222560. Its totient is φ = 4088448.

The previous prime is 6516421. The next prime is 6516431. The reversal of 6516423 is 3246156.

6516423 is a `hidden beast` number, since 651 + 6 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 6516423 - 2¹ = 6516421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6640 + ... + 7557.

It is an arithmetic number, because the mean of its divisors is an integer number (638910).

Almost surely, 2^6516423 is an apocalyptic number.

6516423 is a deficient number, since it is larger than the sum of its proper divisors (3706137).

6516423 is a wasteful number, since it uses less digits than its factorization.

6516423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14223 (or 14217 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 6516423 is about 2552.7285402095. The cubic root of 6516423 is about 186.7826026530.

The spelling of 6516423 in words is "six million, five hundred sixteen thousand, four hundred twenty-three".