3666670069 has 4 divisors (see below), whose sum is σ = 3672234720. Its totient is φ = 3661105420.

The previous prime is 3666670031. The next prime is 3666670087. The reversal of 3666670069 is 9600766663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9600766663 = 28607 ⋅335609.

It is a cyclic number.

It is not a de Polignac number, because 3666670069 - 2¹⁹ = 3666145781 is a prime.

It is a super-2 number, since 2×3666670069² = 26888938789800929522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666670099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2781337 + ... + 2782654.

It is an arithmetic number, because the mean of its divisors is an integer number (918058680).

Almost surely, 2^3666670069 is an apocalyptic number.

It is an amenable number.

3666670069 is a deficient number, since it is larger than the sum of its proper divisors (5564651).

3666670069 is an equidigital number, since it uses as much as digits as its factorization.

3666670069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564650.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The square root of 3666670069 is about 60553.0351757862. The cubic root of 3666670069 is about 1542.0221466794.

The spelling of 3666670069 in words is "three billion, six hundred sixty-six million, six hundred seventy thousand, sixty-nine".