3866650005 has 64 divisors (see below), whose sum is σ = 6658502400. Its totient is φ = 1910200320.

The previous prime is 3866649959. The next prime is 3866650013. The reversal of 3866650005 is 5000566683.

It is not a de Polignac number, because 3866650005 - 2⁷ = 3866649877 is a prime.

It is a super-2 number, since 2×3866650005² = 29901964522333000050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3424281 + ... + 3425409.

It is an arithmetic number, because the mean of its divisors is an integer number (104039100).

Almost surely, 2^3866650005 is an apocalyptic number.

It is an amenable number.

3866650005 is a deficient number, since it is larger than the sum of its proper divisors (2791852395).

3866650005 is a wasteful number, since it uses less digits than its factorization.

3866650005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 3866650005 is about 62182.3930465851. The cubic root of 3866650005 is about 1569.5613207695.

The spelling of 3866650005 in words is "three billion, eight hundred sixty-six million, six hundred fifty thousand, five".