6666436 has 24 divisors (see below), whose sum is σ = 13660416. Its totient is φ = 2786880.

The previous prime is 6666391. The next prime is 6666437. The reversal of 6666436 is 6346666.

6666436 = T₁₄ + T₁₅ + ... + T₃₄₁.

It is a junction number, because it is equal to n+sod(n) for n = 6666395 and 6666404.

It is not an unprimeable number, because it can be changed into a prime (6666437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1756 + ... + 4051.

It is an arithmetic number, because the mean of its divisors is an integer number (569184).

Almost surely, 2^6666436 is an apocalyptic number.

It is an amenable number.

6666436 is an abundant number, since it is smaller than the sum of its proper divisors (6993980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6666436 is a wasteful number, since it uses less digits than its factorization.

6666436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859 (or 5857 counting only the distinct ones).

The product of its digits is 93312, while the sum is 37.

The square root of 6666436 is about 2581.9442286773. The cubic root of 6666436 is about 188.2050350947.

The spelling of 6666436 in words is "six million, six hundred sixty-six thousand, four hundred thirty-six".