78829623 has 6 divisors (see below), whose sum is σ = 113865024. Its totient is φ = 52553076.

The previous prime is 78829607. The next prime is 78829633. The reversal of 78829623 is 32692887.

It is not a de Polignac number, because 78829623 - 2⁴ = 78829607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78829633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4379415 + ... + 4379432.

It is an arithmetic number, because the mean of its divisors is an integer number (18977504).

Almost surely, 2^78829623 is an apocalyptic number.

78829623 is a deficient number, since it is larger than the sum of its proper divisors (35035401).

78829623 is a wasteful number, since it uses less digits than its factorization.

78829623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758853 (or 8758850 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 78829623 is about 8878.6047890420. The cubic root of 78829623 is about 428.7753563303.

The spelling of 78829623 in words is "seventy-eight million, eight hundred twenty-nine thousand, six hundred twenty-three".