3666520463 has 4 divisors (see below), whose sum is σ = 3685132440. Its totient is φ = 3647908488.

The previous prime is 3666520453. The next prime is 3666520469. The reversal of 3666520463 is 3640256663.

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 3666520463 - 2¹² = 3666516367 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3666520463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666520469) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9305693 + ... + 9306086.

It is an arithmetic number, because the mean of its divisors is an integer number (921283110).

Almost surely, 2^3666520463 is an apocalyptic number.

3666520463 is a deficient number, since it is larger than the sum of its proper divisors (18611977).

3666520463 is a wasteful number, since it uses less digits than its factorization.

3666520463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18611976.

The product of its (nonzero) digits is 466560, while the sum is 41.

The square root of 3666520463 is about 60551.7998328704. The cubic root of 3666520463 is about 1542.0011740713.

The spelling of 3666520463 in words is "three billion, six hundred sixty-six million, five hundred twenty thousand, four hundred sixty-three".