87144686 has 8 divisors (see below), whose sum is σ = 138406320. Its totient is φ = 41009248.

The previous prime is 87144679. The next prime is 87144709. The reversal of 87144686 is 68644178.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281506 + ... + 1281573.

It is an arithmetic number, because the mean of its divisors is an integer number (17300790).

Almost surely, 2^87144686 is an apocalyptic number.

87144686 is a deficient number, since it is larger than the sum of its proper divisors (51261634).

87144686 is a wasteful number, since it uses less digits than its factorization.

87144686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563098.

The product of its digits is 258048, while the sum is 44.

The square root of 87144686 is about 9335.1318148165. The cubic root of 87144686 is about 443.3502623544.

It can be divided in two parts, 8714 and 4686, that multiplied together give a palindrome (40833804).

The spelling of 87144686 in words is "eighty-seven million, one hundred forty-four thousand, six hundred eighty-six".