3666726 has 24 divisors (see below), whose sum is σ = 9079824. Its totient is φ = 1047600.

The previous prime is 3666703. The next prime is 3666727. The reversal of 3666726 is 6276663.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14425 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (378326).

Almost surely, 2^3666726 is an apocalyptic number.

3666726 is an abundant number, since it is smaller than the sum of its proper divisors (5413098).

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

3666726 is a wasteful number, since it uses less digits than its factorization.

3666726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29116 (or 29113 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 3666726 is about 1914.8697083614. The cubic root of 3666726 is about 154.2029987254.

The spelling of 3666726 in words is "three million, six hundred sixty-six thousand, seven hundred twenty-six".