65603628 has 48 divisors (see below), whose sum is σ = 171458560. Its totient is φ = 21691152.

The previous prime is 65603623. The next prime is 65603651. The reversal of 65603628 is 82630656.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 65603592 and 65603601.

It is not an unprimeable number, because it can be changed into a prime (65603623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11325 + ... + 16107.

Almost surely, 2^65603628 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 65603628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85729280).

65603628 is an abundant number, since it is smaller than the sum of its proper divisors (105854932).

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

65603628 is a wasteful number, since it uses less digits than its factorization.

65603628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 65603628 is about 8099.6066571161. The cubic root of 65603628 is about 403.3133698351.

The spelling of 65603628 in words is "sixty-five million, six hundred three thousand, six hundred twenty-eight".