87669205 has 8 divisors (see below), whose sum is σ = 113295672. Its totient is φ = 64740288.

The previous prime is 87669199. The next prime is 87669229. The reversal of 87669205 is 50296678.

It can be written as a sum of positive squares in 4 ways, for example, as 16957924 + 70711281 = 4118^2 + 8409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87669205 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674314 + ... + 674443.

It is an arithmetic number, because the mean of its divisors is an integer number (14161959).

Almost surely, 2^87669205 is an apocalyptic number.

It is an amenable number.

87669205 is a deficient number, since it is larger than the sum of its proper divisors (25626467).

87669205 is a wasteful number, since it uses less digits than its factorization.

87669205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348775.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 87669205 is about 9363.1834864003. The cubic root of 87669205 is about 444.2379838402.

It can be divided in two parts, 8766 and 9205, that added together give a palindrome (17971).

The spelling of 87669205 in words is "eighty-seven million, six hundred sixty-nine thousand, two hundred five".