78674071 has 16 divisors (see below), whose sum is σ = 94305600. Its totient is φ = 64205568.

The previous prime is 78674059. The next prime is 78674077. The reversal of 78674071 is 17047687.

It is not a de Polignac number, because 78674071 - 2⁹ = 78673559 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 (78674077) 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 15 ways as a sum of consecutive naturals, for example, 12165 + ... + 17473.

It is an arithmetic number, because the mean of its divisors is an integer number (5894100).

Almost surely, 2^78674071 is an apocalyptic number.

78674071 is a deficient number, since it is larger than the sum of its proper divisors (15631529).

78674071 is a wasteful number, since it uses less digits than its factorization.

78674071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 78674071 is about 8869.8405284424. The cubic root of 78674071 is about 428.4931410069.

The spelling of 78674071 in words is "seventy-eight million, six hundred seventy-four thousand, seventy-one".