78916845 has 32 divisors (see below), whose sum is σ = 144638208. Its totient is φ = 35993088.

The previous prime is 78916837. The next prime is 78916853. The reversal of 78916845 is 54861987.

It is an interprime number because it is at equal distance from previous prime (78916837) and next prime (78916853).

It is not a de Polignac number, because 78916845 - 2³ = 78916837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78916794 and 78916803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89547 + ... + 90423.

It is an arithmetic number, because the mean of its divisors is an integer number (4519944).

Almost surely, 2^78916845 is an apocalyptic number.

It is an amenable number.

78916845 is a deficient number, since it is larger than the sum of its proper divisors (65721363).

78916845 is a wasteful number, since it uses less digits than its factorization.

78916845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749.

The product of its digits is 483840, while the sum is 48.

The square root of 78916845 is about 8883.5153514811. The cubic root of 78916845 is about 428.9334392852.

The spelling of 78916845 in words is "seventy-eight million, nine hundred sixteen thousand, eight hundred forty-five".