619964773 has 2 divisors, whose sum is σ = 619964774. Its totient is φ = 619964772.

The previous prime is 619964707. The next prime is 619964783. The reversal of 619964773 is 377469916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496710369 + 123254404 = 22287^2 + 11102^2 .

It is a cyclic number.

It is not a de Polignac number, because 619964773 - 2¹⁷ = 619833701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 619964773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (619964783) 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, 309982386 + 309982387.

It is an arithmetic number, because the mean of its divisors is an integer number (309982387).

Almost surely, 2^619964773 is an apocalyptic number.

It is an amenable number.

619964773 is a deficient number, since it is larger than the sum of its proper divisors (1).

619964773 is an equidigital number, since it uses as much as digits as its factorization.

619964773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 619964773 is about 24899.0918107468. The cubic root of 619964773 is about 852.6857484902.

The spelling of 619964773 in words is "six hundred nineteen million, nine hundred sixty-four thousand, seven hundred seventy-three".