87686417 has 16 divisors (see below), whose sum is σ = 110436480. Its totient is φ = 67761792.

The previous prime is 87686399. The next prime is 87686437. The reversal of 87686417 is 71468678.

It is not a de Polignac number, because 87686417 - 2⁶ = 87686353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87686437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7292 + ... + 15117.

It is an arithmetic number, because the mean of its divisors is an integer number (6902280).

Almost surely, 2^87686417 is an apocalyptic number.

It is an amenable number.

87686417 is a deficient number, since it is larger than the sum of its proper divisors (22750063).

87686417 is a wasteful number, since it uses less digits than its factorization.

87686417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22472.

The product of its digits is 451584, while the sum is 47.

The square root of 87686417 is about 9364.1025731247. The cubic root of 87686417 is about 444.2670541918.

The spelling of 87686417 in words is "eighty-seven million, six hundred eighty-six thousand, four hundred seventeen".