63166513 has 4 divisors (see below), whose sum is σ = 64358388. Its totient is φ = 61974640.

The previous prime is 63166489. The next prime is 63166517. The reversal of 63166513 is 31566136.

63166513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56370064 + 6796449 = 7508^2 + 2607^2 .

It is a cyclic number.

It is not a de Polignac number, because 63166513 - 2⁹ = 63166001 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63166517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595858 + ... + 595963.

It is an arithmetic number, because the mean of its divisors is an integer number (16089597).

Almost surely, 2^63166513 is an apocalyptic number.

It is an amenable number.

63166513 is a deficient number, since it is larger than the sum of its proper divisors (1191875).

63166513 is a wasteful number, since it uses less digits than its factorization.

63166513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191874.

The product of its digits is 9720, while the sum is 31.

The square root of 63166513 is about 7947.7363443939. The cubic root of 63166513 is about 398.2559757499.

The spelling of 63166513 in words is "sixty-three million, one hundred sixty-six thousand, five hundred thirteen".