78206 has 4 divisors (see below), whose sum is σ = 117312. Its totient is φ = 39102.

The previous prime is 78203. The next prime is 78229. The reversal of 78206 is 60287.

78206 is nontrivially palindromic in base 14.

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

It is a super-2 number, since 2×78206² = 12232356872, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78206.

It is not an unprimeable number, because it can be changed into a prime (78203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19550 + ... + 19553.

It is an arithmetic number, because the mean of its divisors is an integer number (29328).

2⁷⁸²⁰⁶ is an apocalyptic number.

78206 is a deficient number, since it is larger than the sum of its proper divisors (39106).

78206 is a wasteful number, since it uses less digits than its factorization.

78206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39105.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 78206 is about 279.6533568545. The cubic root of 78206 is about 42.7641677561.

The spelling of 78206 in words is "seventy-eight thousand, two hundred six".