87688149 has 8 divisors (see below), whose sum is σ = 116973600. Its totient is φ = 58430736.

The previous prime is 87688147. The next prime is 87688201. The reversal of 87688149 is 94188678.

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

It is not a de Polignac number, because 87688149 - 2¹ = 87688147 is a prime.

It is a super-2 number, since 2×87688149² = 15378422950092402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87688147) 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 7 ways as a sum of consecutive naturals, for example, 1914 + ... + 13380.

It is an arithmetic number, because the mean of its divisors is an integer number (14621700).

Almost surely, 2^87688149 is an apocalyptic number.

It is an amenable number.

87688149 is a deficient number, since it is larger than the sum of its proper divisors (29285451).

87688149 is a wasteful number, since it uses less digits than its factorization.

87688149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14019.

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

The square root of 87688149 is about 9364.1950535003. The cubic root of 87688149 is about 444.2699792570.

The spelling of 87688149 in words is "eighty-seven million, six hundred eighty-eight thousand, one hundred forty-nine".