78857035 has 4 divisors (see below), whose sum is σ = 94628448. Its totient is φ = 63085624.

The previous prime is 78857017. The next prime is 78857039. The reversal of 78857035 is 53075887.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78857035 - 2¹¹ = 78854987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78856982 and 78857000.

It is not an unprimeable number, because it can be changed into a prime (78857039) 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 3 ways as a sum of consecutive naturals, for example, 7885699 + ... + 7885708.

It is an arithmetic number, because the mean of its divisors is an integer number (23657112).

Almost surely, 2^78857035 is an apocalyptic number.

78857035 is a deficient number, since it is larger than the sum of its proper divisors (15771413).

78857035 is a wasteful number, since it uses less digits than its factorization.

78857035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15771412.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 78857035 is about 8880.1483658777. The cubic root of 78857035 is about 428.8250509650.

The spelling of 78857035 in words is "seventy-eight million, eight hundred fifty-seven thousand, thirty-five".