63920636 has 48 divisors (see below), whose sum is σ = 130959360. Its totient is φ = 27034560.

The previous prime is 63920627. The next prime is 63920639. The reversal of 63920636 is 63602936.

It is a junction number, because it is equal to n+sod(n) for n = 63920596 and 63920605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63920639) 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, 29585 + ... + 31671.

It is an arithmetic number, because the mean of its divisors is an integer number (2728320).

Almost surely, 2^63920636 is an apocalyptic number.

It is an amenable number.

63920636 is an abundant number, since it is smaller than the sum of its proper divisors (67038724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63920636 is a wasteful number, since it uses less digits than its factorization.

63920636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 63920636 is about 7995.0382112908. The cubic root of 63920636 is about 399.8345899415.

The spelling of 63920636 in words is "sixty-three million, nine hundred twenty thousand, six hundred thirty-six".