78963645 has 16 divisors (see below), whose sum is σ = 126521280. Its totient is φ = 42054144.

The previous prime is 78963613. The next prime is 78963673. The reversal of 78963645 is 54636987.

It is not a de Polignac number, because 78963645 - 2⁵ = 78963613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78963594 and 78963603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8461 + ... + 15149.

It is an arithmetic number, because the mean of its divisors is an integer number (7907580).

Almost surely, 2^78963645 is an apocalyptic number.

It is an amenable number.

78963645 is a deficient number, since it is larger than the sum of its proper divisors (47557635).

78963645 is a wasteful number, since it uses less digits than its factorization.

78963645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484.

The product of its digits is 1088640, while the sum is 48.

The square root of 78963645 is about 8886.1490534427. The cubic root of 78963645 is about 429.0182125597.

The spelling of 78963645 in words is "seventy-eight million, nine hundred sixty-three thousand, six hundred forty-five".