67878870 has 16 divisors (see below), whose sum is σ = 162909360. Its totient is φ = 18101024.

The previous prime is 67878869. The next prime is 67878947. The reversal of 67878870 is 7887876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1131285 + ... + 1131344.

It is an arithmetic number, because the mean of its divisors is an integer number (10181835).

Almost surely, 2^67878870 is an apocalyptic number.

67878870 is an abundant number, since it is smaller than the sum of its proper divisors (95030490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67878870 is a wasteful number, since it uses less digits than its factorization.

67878870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262639.

The product of its (nonzero) digits is 1053696, while the sum is 51.

The square root of 67878870 is about 8238.8633924832. The cubic root of 67878870 is about 407.9230078673.

The spelling of 67878870 in words is "sixty-seven million, eight hundred seventy-eight thousand, eight hundred seventy".