167987663 has 4 divisors (see below), whose sum is σ = 168057960. Its totient is φ = 167917368.

The previous prime is 167987657. The next prime is 167987669. The reversal of 167987663 is 366789761.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (167987657) and next prime (167987669).

It is a cyclic number.

It is not a de Polignac number, because 167987663 - 2⁴ = 167987647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167987669) 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 3 ways as a sum of consecutive naturals, for example, 31433 + ... + 36386.

It is an arithmetic number, because the mean of its divisors is an integer number (42014490).

Almost surely, 2^167987663 is an apocalyptic number.

167987663 is a deficient number, since it is larger than the sum of its proper divisors (70297).

167987663 is an equidigital number, since it uses as much as digits as its factorization.

167987663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70296.

The product of its digits is 2286144, while the sum is 53.

The square root of 167987663 is about 12961.0054779712. The cubic root of 167987663 is about 551.7713282601.

The spelling of 167987663 in words is "one hundred sixty-seven million, nine hundred eighty-seven thousand, six hundred sixty-three".