348845621 has 2 divisors, whose sum is σ = 348845622. Its totient is φ = 348845620.

The previous prime is 348845599. The next prime is 348845683. The reversal of 348845621 is 126548843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198415396 + 150430225 = 14086^2 + 12265^2 .

It is a cyclic number.

It is not a de Polignac number, because 348845621 - 2²⁶ = 281736757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348845521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174422810 + 174422811.

It is an arithmetic number, because the mean of its divisors is an integer number (174422811).

Almost surely, 2^348845621 is an apocalyptic number.

It is an amenable number.

348845621 is a deficient number, since it is larger than the sum of its proper divisors (1).

348845621 is an equidigital number, since it uses as much as digits as its factorization.

348845621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 41.

The square root of 348845621 is about 18677.4093760350. The cubic root of 348845621 is about 703.9542337727.

The spelling of 348845621 in words is "three hundred forty-eight million, eight hundred forty-five thousand, six hundred twenty-one".