987668155 has 16 divisors (see below), whose sum is σ = 1200195360. Its totient is φ = 780164352.

The previous prime is 987668137. The next prime is 987668177. The reversal of 987668155 is 551866789.

It is a cyclic number.

It is not a de Polignac number, because 987668155 - 2⁹ = 987667643 is a prime.

It is a super-2 number, since 2×987668155² = 1950976768802208050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 987668096 and 987668105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496072 + ... + 498058.

It is an arithmetic number, because the mean of its divisors is an integer number (75012210).

Almost surely, 2^987668155 is an apocalyptic number.

987668155 is a deficient number, since it is larger than the sum of its proper divisors (212527205).

987668155 is a wasteful number, since it uses less digits than its factorization.

987668155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198.

The product of its digits is 3628800, while the sum is 55.

The square root of 987668155 is about 31427.1881497534. The cubic root of 987668155 is about 995.8723711211.

The spelling of 987668155 in words is "nine hundred eighty-seven million, six hundred sixty-eight thousand, one hundred fifty-five".