346649 has 2 divisors, whose sum is σ = 346650. Its totient is φ = 346648.

The previous prime is 346639. The next prime is 346651. The reversal of 346649 is 946643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322624 + 24025 = 568^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 346649 - 2⁸ = 346393 is a prime.

Together with 346651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (346639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173324 + 173325.

It is an arithmetic number, because the mean of its divisors is an integer number (173325).

2³⁴⁶⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

346649 is a deficient number, since it is larger than the sum of its proper divisors (1).

346649 is an equidigital number, since it uses as much as digits as its factorization.

346649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 346649 is about 588.7690548933. The cubic root of 346649 is about 70.2473561903.

The spelling of 346649 in words is "three hundred forty-six thousand, six hundred forty-nine".