695901649 has 2 divisors, whose sum is σ = 695901650. Its totient is φ = 695901648.

The previous prime is 695901643. The next prime is 695901653. The reversal of 695901649 is 946109596.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526381249 + 169520400 = 22943^2 + 13020^2 .

It is a cyclic number.

It is not a de Polignac number, because 695901649 - 2¹⁵ = 695868881 is a prime.

It is not a weakly prime, because it can be changed into another prime (695901643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347950824 + 347950825.

It is an arithmetic number, because the mean of its divisors is an integer number (347950825).

Almost surely, 2^695901649 is an apocalyptic number.

It is an amenable number.

695901649 is a deficient number, since it is larger than the sum of its proper divisors (1).

695901649 is an equidigital number, since it uses as much as digits as its factorization.

695901649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 695901649 is about 26379.9478581744. The cubic root of 695901649 is about 886.1677792723.

The spelling of 695901649 in words is "six hundred ninety-five million, nine hundred one thousand, six hundred forty-nine".