78955 has 4 divisors (see below), whose sum is σ = 94752. Its totient is φ = 63160.

The previous prime is 78941. The next prime is 78977. The reversal of 78955 is 55987.

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

It is not a de Polignac number, because 78955 - 2¹¹ = 76907 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 78955.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7891 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (23688).

2⁷⁸⁹⁵⁵ is an apocalyptic number.

78955 is a deficient number, since it is larger than the sum of its proper divisors (15797).

78955 is a wasteful number, since it uses less digits than its factorization.

78955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15796.

The product of its digits is 12600, while the sum is 34.

The square root of 78955 is about 280.9893236406. The cubic root of 78955 is about 42.9002555575.

The spelling of 78955 in words is "seventy-eight thousand, nine hundred fifty-five".