6667155 has 24 divisors (see below), whose sum is σ = 12607920. Its totient is φ = 3232320.

The previous prime is 6667153. The next prime is 6667159. The reversal of 6667155 is 5517666.

It is a happy number.

It is not a de Polignac number, because 6667155 - 2¹ = 6667153 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6667151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6240 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (525330).

Almost surely, 2^6667155 is an apocalyptic number.

6667155 is a deficient number, since it is larger than the sum of its proper divisors (5940765).

6667155 is a wasteful number, since it uses less digits than its factorization.

6667155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491 (or 13488 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 6667155 is about 2582.0834610833. The cubic root of 6667155 is about 188.2118010566.

The spelling of 6667155 in words is "six million, six hundred sixty-seven thousand, one hundred fifty-five".