87144986 has 8 divisors (see below), whose sum is σ = 131063520. Its totient is φ = 43457148.

The previous prime is 87144983. The next prime is 87144997. The reversal of 87144986 is 68944178.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87144986.

It is not an unprimeable number, because it can be changed into a prime (87144983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56726 + ... + 58241.

It is an arithmetic number, because the mean of its divisors is an integer number (16382940).

Almost surely, 2^87144986 is an apocalyptic number.

87144986 is a deficient number, since it is larger than the sum of its proper divisors (43918534).

87144986 is a wasteful number, since it uses less digits than its factorization.

87144986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115348.

The product of its digits is 387072, while the sum is 47.

The square root of 87144986 is about 9335.1478831350. The cubic root of 87144986 is about 443.3507711057.

The spelling of 87144986 in words is "eighty-seven million, one hundred forty-four thousand, nine hundred eighty-six".