719816869 has 12 divisors (see below), whose sum is σ = 761968620. Its totient is φ = 679569600.

The previous prime is 719816857. The next prime is 719816879. The reversal of 719816869 is 968618917.

719816869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 242175844 + 477641025 = 15562^2 + 21855^2 .

It is a de Polignac number, because none of the positive numbers 2^k-719816869 is a prime.

It is a super-2 number, since 2×719816869² = 1036272649793926322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719816819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30267 + ... + 48535.

It is an arithmetic number, because the mean of its divisors is an integer number (63497385).

Almost surely, 2^719816869 is an apocalyptic number.

It is an amenable number.

719816869 is a deficient number, since it is larger than the sum of its proper divisors (42151751).

719816869 is a wasteful number, since it uses less digits than its factorization.

719816869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18372 (or 18341 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 55.

The square root of 719816869 is about 26829.4030682757. The cubic root of 719816869 is about 896.2049535964.

The spelling of 719816869 in words is "seven hundred nineteen million, eight hundred sixteen thousand, eight hundred sixty-nine".