345620207 has 2 divisors, whose sum is σ = 345620208. Its totient is φ = 345620206.

The previous prime is 345620189. The next prime is 345620221. The reversal of 345620207 is 702026543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345620207 - 2¹⁸ = 345358063 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 345620207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345620227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172810103 + 172810104.

It is an arithmetic number, because the mean of its divisors is an integer number (172810104).

Almost surely, 2^345620207 is an apocalyptic number.

345620207 is a deficient number, since it is larger than the sum of its proper divisors (1).

345620207 is an equidigital number, since it uses as much as digits as its factorization.

345620207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 345620207 is about 18590.8635356188. The cubic root of 345620207 is about 701.7779341329. Note that the first 3 decimals are identical.

The spelling of 345620207 in words is "three hundred forty-five million, six hundred twenty thousand, two hundred seven".