343668657 has 4 divisors (see below), whose sum is σ = 458224880. Its totient is φ = 229112436.

The previous prime is 343668631. The next prime is 343668671. The reversal of 343668657 is 756866343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 343668657 - 2⁷ = 343668529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343668557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57278107 + ... + 57278112.

It is an arithmetic number, because the mean of its divisors is an integer number (114556220).

Almost surely, 2^343668657 is an apocalyptic number.

It is an amenable number.

343668657 is a deficient number, since it is larger than the sum of its proper divisors (114556223).

343668657 is a wasteful number, since it uses less digits than its factorization.

343668657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114556222.

The product of its digits is 2177280, while the sum is 48.

The square root of 343668657 is about 18538.3024303737. The cubic root of 343668657 is about 700.4545734478.

The spelling of 343668657 in words is "three hundred forty-three million, six hundred sixty-eight thousand, six hundred fifty-seven".