345670499 has 2 divisors, whose sum is σ = 345670500. Its totient is φ = 345670498.

The previous prime is 345670489. The next prime is 345670513. The reversal of 345670499 is 994076543.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345670499 - 2²⁰ = 344621923 is a prime.

It is not a weakly prime, because it can be changed into another prime (345670489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172835249 + 172835250.

It is an arithmetic number, because the mean of its divisors is an integer number (172835250).

Almost surely, 2^345670499 is an apocalyptic number.

345670499 is a deficient number, since it is larger than the sum of its proper divisors (1).

345670499 is an equidigital number, since it uses as much as digits as its factorization.

345670499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 345670499 is about 18592.2160863088. The cubic root of 345670499 is about 701.8119715950.

The spelling of 345670499 in words is "three hundred forty-five million, six hundred seventy thousand, four hundred ninety-nine".