53636620 has 48 divisors (see below), whose sum is σ = 119347200. Its totient is φ = 20191680.

The previous prime is 53636593. The next prime is 53636623. The reversal of 53636620 is 2663635.

It is not an unprimeable number, because it can be changed into a prime (53636623) 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, 72211 + ... + 72949.

It is an arithmetic number, because the mean of its divisors is an integer number (2486400).

Almost surely, 2^53636620 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 53636620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59673600).

53636620 is an abundant number, since it is smaller than the sum of its proper divisors (65710580).

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

53636620 is a wasteful number, since it uses less digits than its factorization.

53636620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 53636620 is about 7323.7026154808. The cubic root of 53636620 is about 377.1265725237.

The spelling of 53636620 in words is "fifty-three million, six hundred thirty-six thousand, six hundred twenty".