87067069 has 4 divisors (see below), whose sum is σ = 88494460. Its totient is φ = 85639680.

The previous prime is 87067061. The next prime is 87067091. The reversal of 87067069 is 96076078.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40322500 + 46744569 = 6350^2 + 6837^2 .

It is a cyclic number.

It is not a de Polignac number, because 87067069 - 2³ = 87067061 is a prime.

It is a super-2 number, since 2×87067069² = 15161349008501522, 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 (87067061) 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 3 ways as a sum of consecutive naturals, for example, 713604 + ... + 713725.

It is an arithmetic number, because the mean of its divisors is an integer number (22123615).

Almost surely, 2^87067069 is an apocalyptic number.

It is an amenable number.

87067069 is a deficient number, since it is larger than the sum of its proper divisors (1427391).

87067069 is a wasteful number, since it uses less digits than its factorization.

87067069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427390.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 87067069 is about 9330.9736362290. The cubic root of 87067069 is about 443.2185972644.

Subtracting 87067069 from its reverse (96076078), we obtain a palindrome (9009009).

The spelling of 87067069 in words is "eighty-seven million, sixty-seven thousand, sixty-nine".