345710987 has 2 divisors, whose sum is σ = 345710988. Its totient is φ = 345710986.

The previous prime is 345710983. The next prime is 345711029. The reversal of 345710987 is 789017543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345710987 - 2² = 345710983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345710983) 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, 172855493 + 172855494.

It is an arithmetic number, because the mean of its divisors is an integer number (172855494).

Almost surely, 2^345710987 is an apocalyptic number.

345710987 is a deficient number, since it is larger than the sum of its proper divisors (1).

345710987 is an equidigital number, since it uses as much as digits as its factorization.

345710987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 345710987 is about 18593.3048971935. The cubic root of 345710987 is about 701.8393713431.

The spelling of 345710987 in words is "three hundred forty-five million, seven hundred ten thousand, nine hundred eighty-seven".