87284669 has 2 divisors, whose sum is σ = 87284670. Its totient is φ = 87284668.

The previous prime is 87284663. The next prime is 87284677. The reversal of 87284669 is 96648278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48372025 + 38912644 = 6955^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 87284669 - 2⁸ = 87284413 is a prime.

It is a super-2 number, since 2×87284669² = 15237226884879122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87284663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43642334 + 43642335.

It is an arithmetic number, because the mean of its divisors is an integer number (43642335).

Almost surely, 2^87284669 is an apocalyptic number.

It is an amenable number.

87284669 is a deficient number, since it is larger than the sum of its proper divisors (1).

87284669 is an equidigital number, since it uses as much as digits as its factorization.

87284669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 87284669 is about 9342.6264508435. The cubic root of 87284669 is about 443.5875240925.

The spelling of 87284669 in words is "eighty-seven million, two hundred eighty-four thousand, six hundred sixty-nine".