77848985 has 8 divisors (see below), whose sum is σ = 98335680. Its totient is φ = 59001264.

The previous prime is 77848973. The next prime is 77849003. The reversal of 77848985 is 58984877.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77848985 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77848985.

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, 409637 + ... + 409826.

It is an arithmetic number, because the mean of its divisors is an integer number (12291960).

Almost surely, 2^77848985 is an apocalyptic number.

It is an amenable number.

77848985 is a deficient number, since it is larger than the sum of its proper divisors (20486695).

77848985 is a wasteful number, since it uses less digits than its factorization.

77848985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819487.

The product of its digits is 4515840, while the sum is 56.

The square root of 77848985 is about 8823.2071833319. The cubic root of 77848985 is about 426.9899483362.

The spelling of 77848985 in words is "seventy-seven million, eight hundred forty-eight thousand, nine hundred eighty-five".