343669961 has 4 divisors (see below), whose sum is σ = 343709952. Its totient is φ = 343629972.

The previous prime is 343669919. The next prime is 343669993. The reversal of 343669961 is 169966343.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 343669961 - 2¹⁸ = 343407817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343669561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1241 + ... + 26246.

It is an arithmetic number, because the mean of its divisors is an integer number (85927488).

Almost surely, 2^343669961 is an apocalyptic number.

It is an amenable number.

343669961 is a deficient number, since it is larger than the sum of its proper divisors (39991).

343669961 is a wasteful number, since it uses less digits than its factorization.

343669961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39990.

The product of its digits is 629856, while the sum is 47.

The square root of 343669961 is about 18538.3376007667. The cubic root of 343669961 is about 700.4554593706.

The spelling of 343669961 in words is "three hundred forty-three million, six hundred sixty-nine thousand, nine hundred sixty-one".