719975681 has 2 divisors, whose sum is σ = 719975682. Its totient is φ = 719975680.

The previous prime is 719975639. The next prime is 719975699. The reversal of 719975681 is 186579917.

719975681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 686440000 + 33535681 = 26200^2 + 5791^2 .

It is a cyclic number.

It is not a de Polignac number, because 719975681 - 2¹⁴ = 719959297 is a prime.

It is a super-2 number, since 2×719975681² = 1036729962462827522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (719975981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359987840 + 359987841.

It is an arithmetic number, because the mean of its divisors is an integer number (359987841).

Almost surely, 2^719975681 is an apocalyptic number.

It is an amenable number.

719975681 is a deficient number, since it is larger than the sum of its proper divisors (1).

719975681 is an equidigital number, since it uses as much as digits as its factorization.

719975681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 53.

The square root of 719975681 is about 26832.3625683614. The cubic root of 719975681 is about 896.2708581532.

The spelling of 719975681 in words is "seven hundred nineteen million, nine hundred seventy-five thousand, six hundred eighty-one".