3666995 has 4 divisors (see below), whose sum is σ = 4400400. Its totient is φ = 2933592.

The previous prime is 3666991. The next prime is 3667003. The reversal of 3666995 is 5996663.

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

It is a cyclic number.

It is not a de Polignac number, because 3666995 - 2² = 3666991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3666991) 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, 366695 + ... + 366704.

It is an arithmetic number, because the mean of its divisors is an integer number (1100100).

Almost surely, 2^3666995 is an apocalyptic number.

3666995 is a deficient number, since it is larger than the sum of its proper divisors (733405).

3666995 is an equidigital number, since it uses as much as digits as its factorization.

3666995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733404.

The product of its digits is 262440, while the sum is 44.

The square root of 3666995 is about 1914.9399468391. The cubic root of 3666995 is about 154.2067695364.

The spelling of 3666995 in words is "three million, six hundred sixty-six thousand, nine hundred ninety-five".