2906728817 has 2 divisors, whose sum is σ = 2906728818. Its totient is φ = 2906728816.

The previous prime is 2906728789. The next prime is 2906728859. The reversal of 2906728817 is 7188276092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1468499041 + 1438229776 = 38321^2 + 37924^2 .

It is a cyclic number.

It is not a de Polignac number, because 2906728817 - 2¹⁰ = 2906727793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2906728117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1453364408 + 1453364409.

It is an arithmetic number, because the mean of its divisors is an integer number (1453364409).

Almost surely, 2^2906728817 is an apocalyptic number.

It is an amenable number.

2906728817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2906728817 is an equidigital number, since it uses as much as digits as its factorization.

2906728817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 2906728817 is about 53914.0873705565. The cubic root of 2906728817 is about 1427.1452358134.

The spelling of 2906728817 in words is "two billion, nine hundred six million, seven hundred twenty-eight thousand, eight hundred seventeen".