63161649 has 12 divisors (see below), whose sum is σ = 91305396. Its totient is φ = 42074592.

The previous prime is 63161633. The next prime is 63161653. The reversal of 63161649 is 94616136.

63161649 is a `hidden beast` number, since 6 + 3 + 1 + 6 + 1 + 649 = 666.

63161649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10497600 + 52664049 = 3240^2 + 7257^2 .

It is not a de Polignac number, because 63161649 - 2⁴ = 63161633 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63161669) 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 11 ways as a sum of consecutive naturals, for example, 15979 + ... + 19535.

It is an arithmetic number, because the mean of its divisors is an integer number (7608783).

Almost surely, 2^63161649 is an apocalyptic number.

It is an amenable number.

63161649 is a deficient number, since it is larger than the sum of its proper divisors (28143747).

63161649 is a wasteful number, since it uses less digits than its factorization.

63161649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536 (or 5533 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 63161649 is about 7947.4303394242. The cubic root of 63161649 is about 398.2457532090.

The spelling of 63161649 in words is "sixty-three million, one hundred sixty-one thousand, six hundred forty-nine".