78856629 has 16 divisors (see below), whose sum is σ = 106681344. Its totient is φ = 51807600.

The previous prime is 78856607. The next prime is 78856649. The reversal of 78856629 is 92665887.

It is not a de Polignac number, because 78856629 - 2⁹ = 78856117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78856649) 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, 63444 + ... + 64674.

It is an arithmetic number, because the mean of its divisors is an integer number (6667584).

Almost surely, 2^78856629 is an apocalyptic number.

It is an amenable number.

78856629 is a deficient number, since it is larger than the sum of its proper divisors (27824715).

78856629 is a wasteful number, since it uses less digits than its factorization.

78856629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528.

The product of its digits is 1451520, while the sum is 51.

The square root of 78856629 is about 8880.1255058698. The cubic root of 78856629 is about 428.8243150202.

The spelling of 78856629 in words is "seventy-eight million, eight hundred fifty-six thousand, six hundred twenty-nine".