87814869 has 8 divisors (see below), whose sum is σ = 118161120. Its totient is φ = 58005936.

The previous prime is 87814849. The next prime is 87814873. The reversal of 87814869 is 96841878.

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

It is not a de Polignac number, because 87814869 - 2¹¹ = 87812821 is a prime.

It is a super-2 number, since 2×87814869² = 15422902434974322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87814819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133947 + ... + 134600.

It is an arithmetic number, because the mean of its divisors is an integer number (14770140).

Almost surely, 2^87814869 is an apocalyptic number.

It is an amenable number.

87814869 is a deficient number, since it is larger than the sum of its proper divisors (30346251).

87814869 is a wasteful number, since it uses less digits than its factorization.

87814869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268659.

The product of its digits is 774144, while the sum is 51.

The square root of 87814869 is about 9370.9588090013. The cubic root of 87814869 is about 444.4838842338.

The spelling of 87814869 in words is "eighty-seven million, eight hundred fourteen thousand, eight hundred sixty-nine".