619696013 has 2 divisors, whose sum is σ = 619696014. Its totient is φ = 619696012.

The previous prime is 619696003. The next prime is 619696069. The reversal of 619696013 is 310696916.

619696013 = 17602² + 17603².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309865609 + 309830404 = 17603^2 + 17602^2 .

It is a cyclic number.

It is not a de Polignac number, because 619696013 - 2¹⁶ = 619630477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619696003) 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, 309848006 + 309848007.

It is an arithmetic number, because the mean of its divisors is an integer number (309848007).

Almost surely, 2^619696013 is an apocalyptic number.

619696013 is the 17603-rd centered square number.

It is an amenable number.

619696013 is a deficient number, since it is larger than the sum of its proper divisors (1).

619696013 is an equidigital number, since it uses as much as digits as its factorization.

619696013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 619696013 is about 24893.6942417151. The cubic root of 619696013 is about 852.5625151737.

The spelling of 619696013 in words is "six hundred nineteen million, six hundred ninety-six thousand, thirteen".