65328831 has 12 divisors (see below), whose sum is σ = 94538808. Its totient is φ = 43471824.

The previous prime is 65328829. The next prime is 65328853. The reversal of 65328831 is 13882356.

It is not a de Polignac number, because 65328831 - 2¹ = 65328829 is a prime.

It is a super-2 number, since 2×65328831² = 8535712319653122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65318831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1380 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (7878234).

Almost surely, 2^65328831 is an apocalyptic number.

65328831 is a deficient number, since it is larger than the sum of its proper divisors (29209977).

65328831 is a wasteful number, since it uses less digits than its factorization.

65328831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13462 (or 13459 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 65328831 is about 8082.6252542104. The cubic root of 65328831 is about 402.7494558469.

The spelling of 65328831 in words is "sixty-five million, three hundred twenty-eight thousand, eight hundred thirty-one".