78885871 has 8 divisors (see below), whose sum is σ = 80356464. Its totient is φ = 77421120.

The previous prime is 78885869. The next prime is 78885907. The reversal of 78885871 is 17858887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78885871 - 2¹ = 78885869 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 (78885811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33195 + ... + 35491.

It is an arithmetic number, because the mean of its divisors is an integer number (10044558).

Almost surely, 2^78885871 is an apocalyptic number.

78885871 is a deficient number, since it is larger than the sum of its proper divisors (1470593).

78885871 is a wasteful number, since it uses less digits than its factorization.

78885871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its digits is 1003520, while the sum is 52.

The square root of 78885871 is about 8881.7718389970. The cubic root of 78885871 is about 428.8773147113.

The spelling of 78885871 in words is "seventy-eight million, eight hundred eighty-five thousand, eight hundred seventy-one".