87840716 has 24 divisors (see below), whose sum is σ = 157187520. Its totient is φ = 42936192.

The previous prime is 87840707. The next prime is 87840719. The reversal of 87840716 is 61704878.

It is a super-3 number, since 3×87840716³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (87840719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77240 + ... + 78368.

It is an arithmetic number, because the mean of its divisors is an integer number (6549480).

Almost surely, 2^87840716 is an apocalyptic number.

It is an amenable number.

87840716 is a deficient number, since it is larger than the sum of its proper divisors (69346804).

87840716 is a wasteful number, since it uses less digits than its factorization.

87840716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1551 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 87840716 is about 9372.3378086793. The cubic root of 87840716 is about 444.5274890284.

The spelling of 87840716 in words is "eighty-seven million, eight hundred forty thousand, seven hundred sixteen".