6667138 has 16 divisors (see below), whose sum is σ = 10753920. Its totient is φ = 3090096.

The previous prime is 6667127. The next prime is 6667147. The reversal of 6667138 is 8317666.

It is a super-2 number, since 2×6667138² = 88901458222088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6667097 and 6667106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81 + ... + 3652.

It is an arithmetic number, because the mean of its divisors is an integer number (672120).

Almost surely, 2^6667138 is an apocalyptic number.

6667138 is a deficient number, since it is larger than the sum of its proper divisors (4086782).

6667138 is a wasteful number, since it uses less digits than its factorization.

6667138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801.

The product of its digits is 36288, while the sum is 37.

The square root of 6667138 is about 2582.0801691659. The cubic root of 6667138 is about 188.2116410882.

It can be divided in two parts, 6667 and 138, that multiplied together give a triangular number (920046 = T₁₃₅₆).

The spelling of 6667138 in words is "six million, six hundred sixty-seven thousand, one hundred thirty-eight".