63172649 has 2 divisors, whose sum is σ = 63172650. Its totient is φ = 63172648.

The previous prime is 63172639. The next prime is 63172673. The reversal of 63172649 is 94627136.

63172649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44622400 + 18550249 = 6680^2 + 4307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63172649 is a prime.

It is not a weakly prime, because it can be changed into another prime (63172619) 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 as a sum of consecutive naturals, namely, 31586324 + 31586325.

It is an arithmetic number, because the mean of its divisors is an integer number (31586325).

Almost surely, 2^63172649 is an apocalyptic number.

It is an amenable number.

63172649 is a deficient number, since it is larger than the sum of its proper divisors (1).

63172649 is an equidigital number, since it uses as much as digits as its factorization.

63172649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 63172649 is about 7948.1223568840. The cubic root of 63172649 is about 398.2688708712.

The spelling of 63172649 in words is "sixty-three million, one hundred seventy-two thousand, six hundred forty-nine".