87028669 has 16 divisors (see below), whose sum is σ = 107537920. Its totient is φ = 68584320.

The previous prime is 87028663. The next prime is 87028693. The reversal of 87028669 is 96682078.

It is not a de Polignac number, because 87028669 - 2²³ = 78640061 is a prime.

It is a super-2 number, since 2×87028669² = 15147978455823122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87028663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22897 + ... + 26425.

It is an arithmetic number, because the mean of its divisors is an integer number (6721120).

Almost surely, 2^87028669 is an apocalyptic number.

It is an amenable number.

87028669 is a deficient number, since it is larger than the sum of its proper divisors (20509251).

87028669 is a wasteful number, since it uses less digits than its factorization.

87028669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 87028669 is about 9328.9157462162. The cubic root of 87028669 is about 443.1534287414.

It can be divided in two parts, 8702 and 8669, that added together give a palindrome (17371).

The spelling of 87028669 in words is "eighty-seven million, twenty-eight thousand, six hundred sixty-nine".