345421607 has 2 divisors, whose sum is σ = 345421608. Its totient is φ = 345421606.

The previous prime is 345421579. The next prime is 345421651. The reversal of 345421607 is 706124543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345421607 - 2¹⁰ = 345420583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345421507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172710803 + 172710804.

It is an arithmetic number, because the mean of its divisors is an integer number (172710804).

Almost surely, 2^345421607 is an apocalyptic number.

345421607 is a deficient number, since it is larger than the sum of its proper divisors (1).

345421607 is an equidigital number, since it uses as much as digits as its factorization.

345421607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 345421607 is about 18585.5214347083. The cubic root of 345421607 is about 701.6434900245.

The spelling of 345421607 in words is "three hundred forty-five million, four hundred twenty-one thousand, six hundred seven".