6531667 has 4 divisors (see below), whose sum is σ = 6654960. Its totient is φ = 6408376.

The previous prime is 6531653. The next prime is 6531673. The reversal of 6531667 is 7661356.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6531667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6531617) 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, 61567 + ... + 61672.

It is an arithmetic number, because the mean of its divisors is an integer number (1663740).

Almost surely, 2^6531667 is an apocalyptic number.

6531667 is a deficient number, since it is larger than the sum of its proper divisors (123293).

6531667 is a wasteful number, since it uses less digits than its factorization.

6531667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123292.

The product of its digits is 22680, while the sum is 34.

The square root of 6531667 is about 2555.7126207772. The cubic root of 6531667 is about 186.9281373334.

The spelling of 6531667 in words is "six million, five hundred thirty-one thousand, six hundred sixty-seven".