87302869 has 4 divisors (see below), whose sum is σ = 89662444. Its totient is φ = 84943296.

The previous prime is 87302867. The next prime is 87302879. The reversal of 87302869 is 96820378.

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 55323844 + 31979025 = 7438^2 + 5655^2 .

It is a cyclic number.

It is not a de Polignac number, because 87302869 - 2¹ = 87302867 is a prime.

It is a super-2 number, since 2×87302869² = 15243581871262322, 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 (87302863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179732 + ... + 1179805.

It is an arithmetic number, because the mean of its divisors is an integer number (22415611).

Almost surely, 2^87302869 is an apocalyptic number.

It is an amenable number.

87302869 is a deficient number, since it is larger than the sum of its proper divisors (2359575).

87302869 is a wasteful number, since it uses less digits than its factorization.

87302869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359574.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 87302869 is about 9343.6004302410. The cubic root of 87302869 is about 443.6183532250.

The spelling of 87302869 in words is "eighty-seven million, three hundred two thousand, eight hundred sixty-nine".