686412203 has 2 divisors, whose sum is σ = 686412204. Its totient is φ = 686412202.

The previous prime is 686412193. The next prime is 686412263. The reversal of 686412203 is 302214686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 686412203 - 2⁴ = 686412187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 686412203.

It is not a weakly prime, because it can be changed into another prime (686412263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343206101 + 343206102.

It is an arithmetic number, because the mean of its divisors is an integer number (343206102).

Almost surely, 2^686412203 is an apocalyptic number.

686412203 is a deficient number, since it is larger than the sum of its proper divisors (1).

686412203 is an equidigital number, since it uses as much as digits as its factorization.

686412203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 686412203 is about 26199.4695175303. The cubic root of 686412203 is about 882.1213469164.

Adding to 686412203 its reverse (302214686), we get a palindrome (988626889).

The spelling of 686412203 in words is "six hundred eighty-six million, four hundred twelve thousand, two hundred three".