3666809670 has 16 divisors (see below), whose sum is σ = 8800343280. Its totient is φ = 977815904.

The previous prime is 3666809651. The next prime is 3666809683. The reversal of 3666809670 is 769086663.

3666809670 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61113465 + ... + 61113524.

It is an arithmetic number, because the mean of its divisors is an integer number (550021455).

Almost surely, 2^3666809670 is an apocalyptic number.

3666809670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3666809670 is an abundant number, since it is smaller than the sum of its proper divisors (5133533610).

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

3666809670 is a wasteful number, since it uses less digits than its factorization.

3666809670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122226999.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The square root of 3666809670 is about 60554.1878815991. The cubic root of 3666809670 is about 1542.0417162160.

The spelling of 3666809670 in words is "three billion, six hundred sixty-six million, eight hundred nine thousand, six hundred seventy".