65387087 has 4 divisors (see below), whose sum is σ = 66981936. Its totient is φ = 63792240.

The previous prime is 65387041. The next prime is 65387149. The reversal of 65387087 is 78078356.

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

It is a cyclic number.

It is not a de Polignac number, because 65387087 - 2⁸ = 65386831 is a prime.

It is a super-2 number, since 2×65387087² = 8550942292691138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65387017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 797363 + ... + 797444.

It is an arithmetic number, because the mean of its divisors is an integer number (16745484).

Almost surely, 2^65387087 is an apocalyptic number.

65387087 is a deficient number, since it is larger than the sum of its proper divisors (1594849).

65387087 is a wasteful number, since it uses less digits than its factorization.

65387087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594848.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 65387087 is about 8086.2282307637. The cubic root of 65387087 is about 402.8691355313.

The spelling of 65387087 in words is "sixty-five million, three hundred eighty-seven thousand, eighty-seven".