3636335420 has 72 divisors (see below), whose sum is σ = 8169420336. Its totient is φ = 1358767872.

The previous prime is 3636335413. The next prime is 3636335453. The reversal of 3636335420 is 245336363.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 450944 + ... + 458936.

Almost surely, 2^3636335420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3636335420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4084710168).

3636335420 is an abundant number, since it is smaller than the sum of its proper divisors (4533084916).

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

3636335420 is a wasteful number, since it uses less digits than its factorization.

3636335420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8091 (or 8066 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 35.

The square root of 3636335420 is about 60302.0349573710. The cubic root of 3636335420 is about 1537.7579422258.

The spelling of 3636335420 in words is "three billion, six hundred thirty-six million, three hundred thirty-five thousand, four hundred twenty".