78076171 has 4 divisors (see below), whose sum is σ = 78691072. Its totient is φ = 77461272.

The previous prime is 78076147. The next prime is 78076181. The reversal of 78076171 is 17167087.

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

It is a cyclic number.

It is not a de Polignac number, because 78076171 - 2⁷ = 78076043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78076171.

It is not an unprimeable number, because it can be changed into a prime (78076181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307260 + ... + 307513.

It is an arithmetic number, because the mean of its divisors is an integer number (19672768).

Almost surely, 2^78076171 is an apocalyptic number.

78076171 is a deficient number, since it is larger than the sum of its proper divisors (614901).

78076171 is a wasteful number, since it uses less digits than its factorization.

78076171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614900.

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 78076171 is about 8836.0721477362. The cubic root of 78076171 is about 427.4049052644.

The spelling of 78076171 in words is "seventy-eight million, seventy-six thousand, one hundred seventy-one".