3646666463 has 4 divisors (see below), whose sum is σ = 3978181608. Its totient is φ = 3315151320.

The previous prime is 3646666427. The next prime is 3646666477.

3646666463 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3646666463 - 2⁸ = 3646666207 is a prime.

It is a super-3 number, since 3×3646666463³ (a number of 30 digits) contains 333 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 (3646666423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165757556 + ... + 165757577.

It is an arithmetic number, because the mean of its divisors is an integer number (994545402).

Almost surely, 2^3646666463 is an apocalyptic number.

3646666463 is a deficient number, since it is larger than the sum of its proper divisors (331515145).

3646666463 is a wasteful number, since it uses less digits than its factorization.

3646666463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331515144.

The product of its digits is 6718464, while the sum is 50.

The square root of 3646666463 is about 60387.6350174438. The cubic root of 3646666463 is about 1539.2128522134.

The spelling of 3646666463 in words is "three billion, six hundred forty-six million, six hundred sixty-six thousand, four hundred sixty-three".