63836140 has 24 divisors (see below), whose sum is σ = 135565920. Its totient is φ = 25246848.

The previous prime is 63836119. The next prime is 63836147. The reversal of 63836140 is 4163836.

It is not an unprimeable number, because it can be changed into a prime (63836147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16152 + ... + 19711.

It is an arithmetic number, because the mean of its divisors is an integer number (5648580).

Almost surely, 2^63836140 is an apocalyptic number.

It is an amenable number.

63836140 is an abundant number, since it is smaller than the sum of its proper divisors (71729780).

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

63836140 is a wasteful number, since it uses less digits than its factorization.

63836140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35961 (or 35959 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 63836140 is about 7989.7521863948. The cubic root of 63836140 is about 399.6583332427.

Adding to 63836140 its reverse (4163836), we get a palindrome (67999976).

It can be divided in two parts, 638361 and 40, that added together give a square (638401 = 799²).

The spelling of 63836140 in words is "sixty-three million, eight hundred thirty-six thousand, one hundred forty".