65630032 has 20 divisors (see below), whose sum is σ = 136940020. Its totient is φ = 30290688.

The previous prime is 65630023. The next prime is 65630077. The reversal of 65630032 is 23003656.

It can be written as a sum of positive squares in 2 ways, for example, as 4227136 + 61402896 = 2056^2 + 7836^2 .

It is a super-2 number, since 2×65630032² = 8614602200642048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65629979 and 65630006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157557 + ... + 157972.

It is an arithmetic number, because the mean of its divisors is an integer number (6847001).

Almost surely, 2^65630032 is an apocalyptic number.

It is an amenable number.

65630032 is an abundant number, since it is smaller than the sum of its proper divisors (71309988).

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

65630032 is a wasteful number, since it uses less digits than its factorization.

65630032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315550 (or 315544 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 65630032 is about 8101.2364488392. The cubic root of 65630032 is about 403.3674707956.

Adding to 65630032 its reverse (23003656), we get a palindrome (88633688).

The spelling of 65630032 in words is "sixty-five million, six hundred thirty thousand, thirty-two".