78898 has 8 divisors (see below), whose sum is σ = 119808. Its totient is φ = 38964.

The previous prime is 78893. The next prime is 78901. The reversal of 78898 is 89887.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78898.

It is not an unprimeable number, because it can be changed into a prime (78893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15 + ... + 397.

It is an arithmetic number, because the mean of its divisors is an integer number (14976).

2⁷⁸⁸⁹⁸ is an apocalyptic number.

78898 is a deficient number, since it is larger than the sum of its proper divisors (40910).

78898 is a wasteful number, since it uses less digits than its factorization.

78898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its digits is 32256, while the sum is 40.

The square root of 78898 is about 280.8878779869. The cubic root of 78898 is about 42.8899294086.

The spelling of 78898 in words is "seventy-eight thousand, eight hundred ninety-eight".