345286709 has 2 divisors, whose sum is σ = 345286710. Its totient is φ = 345286708.

The previous prime is 345286693. The next prime is 345286759. The reversal of 345286709 is 907682543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308986084 + 36300625 = 17578^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 345286709 - 2⁴ = 345286693 is a prime.

It is a super-2 number, since 2×345286709² = 238445822824101362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345286709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345286759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172643354 + 172643355.

It is an arithmetic number, because the mean of its divisors is an integer number (172643355).

Almost surely, 2^345286709 is an apocalyptic number.

It is an amenable number.

345286709 is a deficient number, since it is larger than the sum of its proper divisors (1).

345286709 is an equidigital number, since it uses as much as digits as its factorization.

345286709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 345286709 is about 18581.8919650287. The cubic root of 345286709 is about 701.5521401826.

The spelling of 345286709 in words is "three hundred forty-five million, two hundred eighty-six thousand, seven hundred nine".