3666756685 has 8 divisors (see below), whose sum is σ = 4401868536. Its totient is φ = 2932231680.

The previous prime is 3666756677. The next prime is 3666756701. The reversal of 3666756685 is 5866576663.

It can be written as a sum of positive squares in 4 ways, for example, as 65076489 + 3601680196 = 8067^2 + 60014^2 .

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

It is not a de Polignac number, because 3666756685 - 2³ = 3666756677 is a prime.

It is a super-3 number, since 3×3666756685³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian 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, 132844 + ... + 158053.

It is an arithmetic number, because the mean of its divisors is an integer number (550233567).

Almost surely, 2^3666756685 is an apocalyptic number.

It is an amenable number.

3666756685 is a deficient number, since it is larger than the sum of its proper divisors (735111851).

3666756685 is a wasteful number, since it uses less digits than its factorization.

3666756685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293423.

The product of its digits is 32659200, while the sum is 58.

The square root of 3666756685 is about 60553.7503793118. The cubic root of 3666756685 is about 1542.0342887353.

The spelling of 3666756685 in words is "three billion, six hundred sixty-six million, seven hundred fifty-six thousand, six hundred eighty-five".