719723693 has 4 divisors (see below), whose sum is σ = 775087068. Its totient is φ = 664360320.

The previous prime is 719723681. The next prime is 719723699. The reversal of 719723693 is 396327917.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371602729 + 348120964 = 19277^2 + 18658^2 .

It is not a de Polignac number, because 719723693 - 2²⁰ = 718675117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719723699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27681668 + ... + 27681693.

It is an arithmetic number, because the mean of its divisors is an integer number (193771767).

Almost surely, 2^719723693 is an apocalyptic number.

It is an amenable number.

719723693 is a deficient number, since it is larger than the sum of its proper divisors (55363375).

719723693 is a wasteful number, since it uses less digits than its factorization.

719723693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55363374.

The product of its digits is 428652, while the sum is 47.

The square root of 719723693 is about 26827.6665589835. Note that the first 3 decimals coincide. The cubic root of 719723693 is about 896.1662824660.

The spelling of 719723693 in words is "seven hundred nineteen million, seven hundred twenty-three thousand, six hundred ninety-three".