67878867 has 24 divisors (see below), whose sum is σ = 105632400. Its totient is φ = 38658816.

The previous prime is 67878847. The next prime is 67878869. The reversal of 67878867 is 76887876.

It is not a de Polignac number, because 67878867 - 2⁶ = 67878803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67878869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59559 + ... + 60687.

It is an arithmetic number, because the mean of its divisors is an integer number (4401350).

Almost surely, 2^67878867 is an apocalyptic number.

67878867 is a deficient number, since it is larger than the sum of its proper divisors (37753533).

67878867 is a wasteful number, since it uses less digits than its factorization.

67878867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1548 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 57.

The square root of 67878867 is about 8238.8632104193. The cubic root of 67878867 is about 407.9230018577.

Subtracting 67878867 from its reverse (76887876), we obtain a palindrome (9009009).

The spelling of 67878867 in words is "sixty-seven million, eight hundred seventy-eight thousand, eight hundred sixty-seven".