65253630 has 32 divisors (see below), whose sum is σ = 168656544. Its totient is φ = 16062336.

The previous prime is 65253611. The next prime is 65253677. The reversal of 65253630 is 3635256.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83269 + ... + 84048.

It is an arithmetic number, because the mean of its divisors is an integer number (5270517).

Almost surely, 2^65253630 is an apocalyptic number.

65253630 is an abundant number, since it is smaller than the sum of its proper divisors (103402914).

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

65253630 is a wasteful number, since it uses less digits than its factorization.

65253630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167340.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 65253630 is about 8077.9718989360. The cubic root of 65253630 is about 402.5948595268.

Adding to 65253630 its reverse (3635256), we get a palindrome (68888886).

The spelling of 65253630 in words is "sixty-five million, two hundred fifty-three thousand, six hundred thirty".