699561493 has 2 divisors, whose sum is σ = 699561494. Its totient is φ = 699561492.

The previous prime is 699561463. The next prime is 699561521. The reversal of 699561493 is 394165996.

699561493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459373489 + 240188004 = 21433^2 + 15498^2 .

It is a cyclic number.

It is not a de Polignac number, because 699561493 - 2¹⁷ = 699430421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 699561493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699561463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349780746 + 349780747.

It is an arithmetic number, because the mean of its divisors is an integer number (349780747).

Almost surely, 2^699561493 is an apocalyptic number.

It is an amenable number.

699561493 is a deficient number, since it is larger than the sum of its proper divisors (1).

699561493 is an equidigital number, since it uses as much as digits as its factorization.

699561493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 52.

The square root of 699561493 is about 26449.2248090563. The cubic root of 699561493 is about 887.7185572425.

The spelling of 699561493 in words is "six hundred ninety-nine million, five hundred sixty-one thousand, four hundred ninety-three".