63868149 has 16 divisors (see below), whose sum is σ = 96225600. Its totient is φ = 41856048.

The previous prime is 63868117. The next prime is 63868151. The reversal of 63868149 is 94186836.

63868149 is a `hidden beast` number, since 638 + 6 + 8 + 1 + 4 + 9 = 666.

It is not a de Polignac number, because 63868149 - 2⁵ = 63868117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63868199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18454 + ... + 21639.

It is an arithmetic number, because the mean of its divisors is an integer number (6014100).

Almost surely, 2^63868149 is an apocalyptic number.

It is an amenable number.

63868149 is a deficient number, since it is larger than the sum of its proper divisors (32357451).

63868149 is a wasteful number, since it uses less digits than its factorization.

63868149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40161 (or 40155 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 63868149 is about 7991.7550638142. The cubic root of 63868149 is about 399.7251215646.

It can be divided in two parts, 6386 and 8149, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 63868149 in words is "sixty-three million, eight hundred sixty-eight thousand, one hundred forty-nine".