2005902697 has 2 divisors, whose sum is σ = 2005902698. Its totient is φ = 2005902696.

The previous prime is 2005902683. The next prime is 2005902757. The reversal of 2005902697 is 7962095002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1360945881 + 644956816 = 36891^2 + 25396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005902697 - 2¹¹ = 2005900649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2005902677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002951348 + 1002951349.

It is an arithmetic number, because the mean of its divisors is an integer number (1002951349).

Almost surely, 2^2005902697 is an apocalyptic number.

It is an amenable number.

2005902697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005902697 is an equidigital number, since it uses as much as digits as its factorization.

2005902697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 2005902697 is about 44787.3050874910. The cubic root of 2005902697 is about 1261.1593212028.

Adding to 2005902697 its reverse (7962095002), we get a palindrome (9967997699).

The spelling of 2005902697 in words is "two billion, five million, nine hundred two thousand, six hundred ninety-seven".