719600561 has 2 divisors, whose sum is σ = 719600562. Its totient is φ = 719600560.

The previous prime is 719600537. The next prime is 719600627. The reversal of 719600561 is 165006917.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386319025 + 333281536 = 19655^2 + 18256^2 .

It is an emirp because it is prime and its reverse (165006917) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-719600561 is a prime.

It is not a weakly prime, because it can be changed into another prime (719606561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359800280 + 359800281.

It is an arithmetic number, because the mean of its divisors is an integer number (359800281).

Almost surely, 2^719600561 is an apocalyptic number.

It is an amenable number.

719600561 is a deficient number, since it is larger than the sum of its proper divisors (1).

719600561 is an equidigital number, since it uses as much as digits as its factorization.

719600561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 719600561 is about 26825.3715910889. The cubic root of 719600561 is about 896.1151734820.

The spelling of 719600561 in words is "seven hundred nineteen million, six hundred thousand, five hundred sixty-one".