719554081 has 2 divisors, whose sum is σ = 719554082. Its totient is φ = 719554080.

The previous prime is 719554063. The next prime is 719554093. The reversal of 719554081 is 180455917.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497067025 + 222487056 = 22295^2 + 14916^2 .

It is a cyclic number.

It is not a de Polignac number, because 719554081 - 2¹⁹ = 719029793 is a prime.

It is a super-2 number, since 2×719554081² = 1035516150967509122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (719554021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359777040 + 359777041.

It is an arithmetic number, because the mean of its divisors is an integer number (359777041).

Almost surely, 2^719554081 is an apocalyptic number.

It is an amenable number.

719554081 is a deficient number, since it is larger than the sum of its proper divisors (1).

719554081 is an equidigital number, since it uses as much as digits as its factorization.

719554081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 719554081 is about 26824.5052330886. The cubic root of 719554081 is about 896.0958792919.

The spelling of 719554081 in words is "seven hundred nineteen million, five hundred fifty-four thousand, eighty-one".