867615663 has 4 divisors (see below), whose sum is σ = 1156820888. Its totient is φ = 578410440.

The previous prime is 867615643. The next prime is 867615673. The reversal of 867615663 is 366516768.

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

It is not a de Polignac number, because 867615663 - 2²⁶ = 800506799 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 (867615643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144602608 + ... + 144602613.

It is an arithmetic number, because the mean of its divisors is an integer number (289205222).

Almost surely, 2^867615663 is an apocalyptic number.

867615663 is a deficient number, since it is larger than the sum of its proper divisors (289205225).

867615663 is a wasteful number, since it uses less digits than its factorization.

867615663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289205224.

The product of its digits is 1088640, while the sum is 48.

The square root of 867615663 is about 29455.3163792209. The cubic root of 867615663 is about 953.7673718270.

The spelling of 867615663 in words is "eight hundred sixty-seven million, six hundred fifteen thousand, six hundred sixty-three".