78786345 has 64 divisors (see below), whose sum is σ = 144580608. Its totient is φ = 36288000.

The previous prime is 78786329. The next prime is 78786349. The reversal of 78786345 is 54368787.

It is not a de Polignac number, because 78786345 - 2⁴ = 78786329 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78786294 and 78786303.

It is not an unprimeable number, because it can be changed into a prime (78786349) 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 63 ways as a sum of consecutive naturals, for example, 373290 + ... + 373500.

It is an arithmetic number, because the mean of its divisors is an integer number (2259072).

Almost surely, 2^78786345 is an apocalyptic number.

It is an amenable number.

78786345 is a deficient number, since it is larger than the sum of its proper divisors (65794263).

78786345 is a wasteful number, since it uses less digits than its factorization.

78786345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334.

The product of its digits is 1128960, while the sum is 48.

The square root of 78786345 is about 8876.1672471850. The cubic root of 78786345 is about 428.6968751025.

The spelling of 78786345 in words is "seventy-eight million, seven hundred eighty-six thousand, three hundred forty-five".