348441661 has 2 divisors, whose sum is σ = 348441662. Its totient is φ = 348441660.

The previous prime is 348441563. The next prime is 348441671. The reversal of 348441661 is 166144843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330548761 + 17892900 = 18181^2 + 4230^2 .

It is an emirp because it is prime and its reverse (166144843) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348441661 is a prime.

It is a super-2 number, since 2×348441661² = 242823182240877842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 348441661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348441671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174220830 + 174220831.

It is an arithmetic number, because the mean of its divisors is an integer number (174220831).

Almost surely, 2^348441661 is an apocalyptic number.

It is an amenable number.

348441661 is a deficient number, since it is larger than the sum of its proper divisors (1).

348441661 is an equidigital number, since it uses as much as digits as its factorization.

348441661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 37.

The square root of 348441661 is about 18666.5921099702. The cubic root of 348441661 is about 703.6824046583.

The spelling of 348441661 in words is "three hundred forty-eight million, four hundred forty-one thousand, six hundred sixty-one".