345619907 has 2 divisors, whose sum is σ = 345619908. Its totient is φ = 345619906.

The previous prime is 345619889. The next prime is 345619909. The reversal of 345619907 is 709916543.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345619907 is a prime.

It is a super-2 number, since 2×345619907² = 238906240229377298, which contains 22 as substring.

Together with 345619909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345619909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172809953 + 172809954.

It is an arithmetic number, because the mean of its divisors is an integer number (172809954).

Almost surely, 2^345619907 is an apocalyptic number.

345619907 is a deficient number, since it is larger than the sum of its proper divisors (1).

345619907 is an equidigital number, since it uses as much as digits as its factorization.

345619907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 345619907 is about 18590.8554671376. The cubic root of 345619907 is about 701.7777310839. Note that the first 4 decimals are identical.

The spelling of 345619907 in words is "three hundred forty-five million, six hundred nineteen thousand, nine hundred seven".