206919 has 12 divisors (see below), whose sum is σ = 303576. Its totient is φ = 135792.

The previous prime is 206917. The next prime is 206923. The reversal of 206919 is 919602.

It is a happy number.

It is not a de Polignac number, because 206919 - 2¹ = 206917 is a prime.

It is a super-2 number, since 2×206919² = 85630945122, which contains 22 as substring.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 206892 and 206901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609 + ... + 885.

It is an arithmetic number, because the mean of its divisors is an integer number (25298).

2²⁰⁶⁹¹⁹ is an apocalyptic number.

206919 is a deficient number, since it is larger than the sum of its proper divisors (96657).

206919 is a wasteful number, since it uses less digits than its factorization.

206919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 363 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 206919 is about 454.8835015694. The cubic root of 206919 is about 59.1471001447.

The spelling of 206919 in words is "two hundred six thousand, nine hundred nineteen".