63946251 has 12 divisors (see below), whose sum is σ = 92470560. Its totient is φ = 42582960.

The previous prime is 63946243. The next prime is 63946261. The reversal of 63946251 is 15264936.

It is a happy number.

It is not a de Polignac number, because 63946251 - 2³ = 63946243 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (63946241) 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 11 ways as a sum of consecutive naturals, for example, 5710 + ... + 12668.

It is an arithmetic number, because the mean of its divisors is an integer number (7705880).

Almost surely, 2^63946251 is an apocalyptic number.

63946251 is a deficient number, since it is larger than the sum of its proper divisors (28524309).

63946251 is a wasteful number, since it uses less digits than its factorization.

63946251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7986 (or 7983 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 63946251 is about 7996.6399818924. The cubic root of 63946251 is about 399.8879915549.

The spelling of 63946251 in words is "sixty-three million, nine hundred forty-six thousand, two hundred fifty-one".