78857995 has 8 divisors (see below), whose sum is σ = 96042384. Its totient is φ = 62144544.

The previous prime is 78857981. The next prime is 78858029. The reversal of 78857995 is 59975887.

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 78857995 - 2¹³ = 78849803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 117364 + ... + 118033.

It is an arithmetic number, because the mean of its divisors is an integer number (12005298).

Almost surely, 2^78857995 is an apocalyptic number.

78857995 is a deficient number, since it is larger than the sum of its proper divisors (17184389).

78857995 is a wasteful number, since it uses less digits than its factorization.

78857995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235469.

The product of its digits is 6350400, while the sum is 58.

The square root of 78857995 is about 8880.2024188641. The cubic root of 78857995 is about 428.8267911199.

The spelling of 78857995 in words is "seventy-eight million, eight hundred fifty-seven thousand, nine hundred ninety-five".