65163630 has 96 divisors (see below), whose sum is σ = 184203936. Its totient is φ = 14708736.

The previous prime is 65163629. The next prime is 65163647. The reversal of 65163630 is 3636156.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142362 + ... + 142818.

It is an arithmetic number, because the mean of its divisors is an integer number (1918791).

Almost surely, 2^65163630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65163630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92101968).

65163630 is an abundant number, since it is smaller than the sum of its proper divisors (119040306).

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

65163630 is a wasteful number, since it uses less digits than its factorization.

65163630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 65163630 is about 8072.3992715921. The cubic root of 65163630 is about 402.4096835793.

Adding to 65163630 its reverse (3636156), we get a palindrome (68799786).

The spelling of 65163630 in words is "sixty-five million, one hundred sixty-three thousand, six hundred thirty".