78545379 has 16 divisors (see below), whose sum is σ = 114894720. Its totient is φ = 47333760.

The previous prime is 78545359. The next prime is 78545387. The reversal of 78545379 is 97354587.

It is not a de Polignac number, because 78545379 - 2⁵ = 78545347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78545359) 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, 742 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (7180920).

Almost surely, 2^78545379 is an apocalyptic number.

78545379 is a deficient number, since it is larger than the sum of its proper divisors (36349341).

78545379 is a wasteful number, since it uses less digits than its factorization.

78545379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490.

The product of its digits is 1058400, while the sum is 48.

The square root of 78545379 is about 8862.5830884681. The cubic root of 78545379 is about 428.2593760013.

It can be divided in two parts, 785 and 45379, that added together give a palindrome (46164).

The spelling of 78545379 in words is "seventy-eight million, five hundred forty-five thousand, three hundred seventy-nine".