773673290569 has 9 divisors (see below), whose sum is σ = 782543103303. Its totient is φ = 764902928592.

The previous prime is 773673290567. The next prime is 773673290581. The reversal of 773673290569 is 965092376377.

The square root of 773673290569 is 879587.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 148561680969 + 625111609600 = 385437^2 + 790640^2 .

It is not a de Polignac number, because 773673290569 - 2¹ = 773673290567 is a prime.

It is a super-2 number, since 2×773673290569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 773673290569.

It is not an unprimeable number, because it can be changed into a prime (773673290567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78278302 + ... + 78288184.

Almost surely, 2^773673290569 is an apocalyptic number.

773673290569 is the 879587-th square number.

773673290569 is the 439794-th centered octagonal number.

It is an amenable number.

773673290569 is a deficient number, since it is larger than the sum of its proper divisors (8869812734).

773673290569 is an frugal number, since it uses more digits than its factorization.

773673290569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19944 (or 9972 counting only the distinct ones).

The product of its (nonzero) digits is 90016920, while the sum is 64.

Multiplying 773673290569 by its sum of digits (64), we get a square (49515090596416 = 7036696²).

The spelling of 773673290569 in words is "seven hundred seventy-three billion, six hundred seventy-three million, two hundred ninety thousand, five hundred sixty-nine".