343716649 has 2 divisors, whose sum is σ = 343716650. Its totient is φ = 343716648.

The previous prime is 343716589. The next prime is 343716661. The reversal of 343716649 is 946617343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326452624 + 17264025 = 18068^2 + 4155^2 .

It is a cyclic number.

It is not a de Polignac number, because 343716649 - 2²¹ = 341619497 is a prime.

It is a super-2 number, since 2×343716649² = 236282269599578402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (343716049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171858324 + 171858325.

It is an arithmetic number, because the mean of its divisors is an integer number (171858325).

Almost surely, 2^343716649 is an apocalyptic number.

It is an amenable number.

343716649 is a deficient number, since it is larger than the sum of its proper divisors (1).

343716649 is an equidigital number, since it uses as much as digits as its factorization.

343716649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 343716649 is about 18539.5967863382. The cubic root of 343716649 is about 700.4871771884.

The spelling of 343716649 in words is "three hundred forty-three million, seven hundred sixteen thousand, six hundred forty-nine".