353728861 has 2 divisors, whose sum is σ = 353728862. Its totient is φ = 353728860.

The previous prime is 353728847. The next prime is 353728897. The reversal of 353728861 is 168827353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335109636 + 18619225 = 18306^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 353728861 - 2⁵ = 353728829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353728841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176864430 + 176864431.

It is an arithmetic number, because the mean of its divisors is an integer number (176864431).

Almost surely, 2^353728861 is an apocalyptic number.

It is an amenable number.

353728861 is a deficient number, since it is larger than the sum of its proper divisors (1).

353728861 is an equidigital number, since it uses as much as digits as its factorization.

353728861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 353728861 is about 18807.6809043539. The cubic root of 353728861 is about 707.2237421104.

The spelling of 353728861 in words is "three hundred fifty-three million, seven hundred twenty-eight thousand, eight hundred sixty-one".