719998069729 has 9 divisors (see below), whose sum is σ = 724477837651. Its totient is φ = 715545848560.

The previous prime is 719998069699. The next prime is 719998069753. The reversal of 719998069729 is 927960899917.

It is a happy number.

The square root of 719998069729 is 848527.

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., 98675772129 + 621322297600 = 314127^2 + 788240^2 .

It is not a de Polignac number, because 719998069729 - 2⁵ = 719998069697 is a prime.

It is a super-2 number, since 2×719998069729² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (719998069429) 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, 141701469 + ... + 141706549.

Almost surely, 2^719998069729 is an apocalyptic number.

719998069729 is the 848527-th square number.

719998069729 is the 424264-th centered octagonal number.

It is an amenable number.

719998069729 is a deficient number, since it is larger than the sum of its proper divisors (4479767922).

719998069729 is an frugal number, since it uses more digits than its factorization.

719998069729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496 (or 5248 counting only the distinct ones).

The product of its (nonzero) digits is 277766496, while the sum is 76.

The spelling of 719998069729 in words is "seven hundred nineteen billion, nine hundred ninety-eight million, sixty-nine thousand, seven hundred twenty-nine".