63928636 has 12 divisors (see below), whose sum is σ = 118456128. Its totient is φ = 30084032.

The previous prime is 63928621. The next prime is 63928639. The reversal of 63928636 is 63682936.

It is a junction number, because it is equal to n+sod(n) for n = 63928592 and 63928601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63928639) 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 3 ways as a sum of consecutive naturals, for example, 469996 + ... + 470131.

It is an arithmetic number, because the mean of its divisors is an integer number (9871344).

Almost surely, 2^63928636 is an apocalyptic number.

It is an amenable number.

63928636 is a deficient number, since it is larger than the sum of its proper divisors (54527492).

63928636 is a wasteful number, since it uses less digits than its factorization.

63928636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940148 (or 940146 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 63928636 is about 7995.5385059419. The cubic root of 63928636 is about 399.8512697051.

The spelling of 63928636 in words is "sixty-three million, nine hundred twenty-eight thousand, six hundred thirty-six".