696623549 has 2 divisors, whose sum is σ = 696623550. Its totient is φ = 696623548.

The previous prime is 696623539. The next prime is 696623567. The reversal of 696623549 is 945326696.

696623549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 694691449 + 1932100 = 26357^2 + 1390^2 .

It is a cyclic number.

It is not a de Polignac number, because 696623549 - 2⁴ = 696623533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 696623497 and 696623506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (696623509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348311774 + 348311775.

It is an arithmetic number, because the mean of its divisors is an integer number (348311775).

Almost surely, 2^696623549 is an apocalyptic number.

It is an amenable number.

696623549 is a deficient number, since it is larger than the sum of its proper divisors (1).

696623549 is an equidigital number, since it uses as much as digits as its factorization.

696623549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 50.

The square root of 696623549 is about 26393.6270527565. The cubic root of 696623549 is about 886.4740981514.

The spelling of 696623549 in words is "six hundred ninety-six million, six hundred twenty-three thousand, five hundred forty-nine".