345116647 has 2 divisors, whose sum is σ = 345116648. Its totient is φ = 345116646.

The previous prime is 345116593. The next prime is 345116657. The reversal of 345116647 is 746611543.

It is a strong prime.

It is an emirp because it is prime and its reverse (746611543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345116647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345116657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172558323 + 172558324.

It is an arithmetic number, because the mean of its divisors is an integer number (172558324).

Almost surely, 2^345116647 is an apocalyptic number.

345116647 is a deficient number, since it is larger than the sum of its proper divisors (1).

345116647 is an equidigital number, since it uses as much as digits as its factorization.

345116647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 345116647 is about 18577.3153873212. The cubic root of 345116647 is about 701.4369441735.

The spelling of 345116647 in words is "three hundred forty-five million, one hundred sixteen thousand, six hundred forty-seven".