87678117 has 12 divisors (see below), whose sum is σ = 126937824. Its totient is φ = 58317480.

The previous prime is 87678067. The next prime is 87678119. The reversal of 87678117 is 71187678.

It is a happy number.

It is not a de Polignac number, because 87678117 - 2¹⁴ = 87661733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87678119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7009 + ... + 14982.

It is an arithmetic number, because the mean of its divisors is an integer number (10578152).

Almost surely, 2^87678117 is an apocalyptic number.

It is an amenable number.

87678117 is a deficient number, since it is larger than the sum of its proper divisors (39259707).

87678117 is a wasteful number, since it uses less digits than its factorization.

87678117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22440 (or 22437 counting only the distinct ones).

The product of its digits is 131712, while the sum is 45.

The square root of 87678117 is about 9363.6593808190. The cubic root of 87678117 is about 444.2530363122.

The spelling of 87678117 in words is "eighty-seven million, six hundred seventy-eight thousand, one hundred seventeen".