78574823 has 8 divisors (see below), whose sum is σ = 83070000. Its totient is φ = 74115648.

The previous prime is 78574817. The next prime is 78574849. The reversal of 78574823 is 32847587.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78574823 - 2⁶ = 78574759 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 (78574883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4448 + ... + 13301.

It is an arithmetic number, because the mean of its divisors is an integer number (10383750).

Almost surely, 2^78574823 is an apocalyptic number.

78574823 is a deficient number, since it is larger than the sum of its proper divisors (4495177).

78574823 is a wasteful number, since it uses less digits than its factorization.

78574823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18001.

The product of its digits is 376320, while the sum is 44.

The square root of 78574823 is about 8864.2440738057. The cubic root of 78574823 is about 428.3128826235.

It can be divided in two parts, 78574 and 823, that added together give a palindrome (79397).

The spelling of 78574823 in words is "seventy-eight million, five hundred seventy-four thousand, eight hundred twenty-three".