78255683 has 8 divisors (see below), whose sum is σ = 89081856. Its totient is φ = 68048200.

The previous prime is 78255679. The next prime is 78255713. The reversal of 78255683 is 38655287.

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

It is not a de Polignac number, because 78255683 - 2² = 78255679 is a prime.

It is a super-2 number, since 2×78255683² = 12247903843592978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78255643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154403 + ... + 154908.

It is an arithmetic number, because the mean of its divisors is an integer number (11135232).

Almost surely, 2^78255683 is an apocalyptic number.

78255683 is a deficient number, since it is larger than the sum of its proper divisors (10826173).

78255683 is a wasteful number, since it uses less digits than its factorization.

78255683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309345.

The product of its digits is 403200, while the sum is 44.

The square root of 78255683 is about 8846.2242227970. The cubic root of 78255683 is about 427.7322163253.

It can be divided in two parts, 782 and 55683, that added together give a palindrome (56465).

The spelling of 78255683 in words is "seventy-eight million, two hundred fifty-five thousand, six hundred eighty-three".