78755 has 8 divisors (see below), whose sum is σ = 99600. Its totient is φ = 59616.

The previous prime is 78737. The next prime is 78779. The reversal of 78755 is 55787.

78755 = 36² + 37² + ... + 65².

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 78755 - 2⁶ = 78691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320 + ... + 509.

It is an arithmetic number, because the mean of its divisors is an integer number (12450).

2⁷⁸⁷⁵⁵ is an apocalyptic number.

78755 is a deficient number, since it is larger than the sum of its proper divisors (20845).

78755 is a wasteful number, since it uses less digits than its factorization.

78755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853.

The product of its digits is 9800, while the sum is 32.

The square root of 78755 is about 280.6332125747. The cubic root of 78755 is about 42.8640015478.

Adding to 78755 its sum of digits (32), we get a palindrome (78787).

The spelling of 78755 in words is "seventy-eight thousand, seven hundred fifty-five".