663052013 has 4 divisors (see below), whose sum is σ = 714056028. Its totient is φ = 612048000.

The previous prime is 663052007. The next prime is 663052043. The reversal of 663052013 is 310250366.

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

It can be written as a sum of positive squares in 2 ways, for example, as 350363524 + 312688489 = 18718^2 + 17683^2 .

It is a cyclic number.

It is not a de Polignac number, because 663052013 - 2¹⁴ = 663035629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663052043) 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, 25501988 + ... + 25502013.

It is an arithmetic number, because the mean of its divisors is an integer number (178514007).

Almost surely, 2^663052013 is an apocalyptic number.

It is an amenable number.

663052013 is a deficient number, since it is larger than the sum of its proper divisors (51004015).

663052013 is a wasteful number, since it uses less digits than its factorization.

663052013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51004014.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 663052013 is about 25749.7963681269. The cubic root of 663052013 is about 871.9987572051.

The spelling of 663052013 in words is "six hundred sixty-three million, fifty-two thousand, thirteen".