87238065 has 16 divisors (see below), whose sum is σ = 139741056. Its totient is φ = 46473600.

The previous prime is 87238051. The next prime is 87238069. The reversal of 87238065 is 56083278.

It is not a de Polignac number, because 87238065 - 2¹⁰ = 87237041 is a prime.

It is a super-2 number, since 2×87238065² = 15220959969888450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87238069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12645 + ... + 18285.

It is an arithmetic number, because the mean of its divisors is an integer number (8733816).

Almost surely, 2^87238065 is an apocalyptic number.

It is an amenable number.

87238065 is a deficient number, since it is larger than the sum of its proper divisors (52502991).

87238065 is a wasteful number, since it uses less digits than its factorization.

87238065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 87238065 is about 9340.1319583826. The cubic root of 87238065 is about 443.5085616447.

The spelling of 87238065 in words is "eighty-seven million, two hundred thirty-eight thousand, sixty-five".