3666993 has 8 divisors (see below), whose sum is σ = 5333856. Its totient is φ = 2222400.

The previous prime is 3666991. The next prime is 3667003. The reversal of 3666993 is 3996663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3666993 - 2¹ = 3666991 is a prime.

3666993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3666991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55528 + ... + 55593.

It is an arithmetic number, because the mean of its divisors is an integer number (666732).

Almost surely, 2^3666993 is an apocalyptic number.

3666993 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

3666993 is a deficient number, since it is larger than the sum of its proper divisors (1666863).

3666993 is a wasteful number, since it uses less digits than its factorization.

3666993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111135.

The product of its digits is 157464, while the sum is 42.

The square root of 3666993 is about 1914.9394246294. The cubic root of 3666993 is about 154.2067415013.

The spelling of 3666993 in words is "three million, six hundred sixty-six thousand, nine hundred ninety-three".