65987882 has 4 divisors (see below), whose sum is σ = 98981826. Its totient is φ = 32993940.

The previous prime is 65987881. The next prime is 65987899. The reversal of 65987882 is 28878956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59274601 + 6713281 = 7699^2 + 2591^2 .

It is not an unprimeable number, because it can be changed into a prime (65987881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16496969 + ... + 16496972.

Almost surely, 2^65987882 is an apocalyptic number.

65987882 is a deficient number, since it is larger than the sum of its proper divisors (32993944).

65987882 is a wasteful number, since it uses less digits than its factorization.

65987882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32993943.

The product of its digits is 1935360, while the sum is 53.

The square root of 65987882 is about 8123.2925590551. The cubic root of 65987882 is about 404.0992673430.

The spelling of 65987882 in words is "sixty-five million, nine hundred eighty-seven thousand, eight hundred eighty-two".