687228167 has 4 divisors (see below), whose sum is σ = 710925720. Its totient is φ = 663530616.

The previous prime is 687228161. The next prime is 687228169. The reversal of 687228167 is 761822786.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 761822786 = 2 ⋅380911393.

It is a cyclic number.

It is not a de Polignac number, because 687228167 - 2⁶ = 687228103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687228161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11848733 + ... + 11848790.

It is an arithmetic number, because the mean of its divisors is an integer number (177731430).

Almost surely, 2^687228167 is an apocalyptic number.

687228167 is a deficient number, since it is larger than the sum of its proper divisors (23697553).

687228167 is a wasteful number, since it uses less digits than its factorization.

687228167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23697552.

The product of its digits is 451584, while the sum is 47.

The square root of 687228167 is about 26215.0370398365. The cubic root of 687228167 is about 882.4707454450.

The spelling of 687228167 in words is "six hundred eighty-seven million, two hundred twenty-eight thousand, one hundred sixty-seven".