719958649 has 2 divisors, whose sum is σ = 719958650. Its totient is φ = 719958648.

The previous prime is 719958599. The next prime is 719958667. The reversal of 719958649 is 946859917.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 705858624 + 14100025 = 26568^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 719958649 - 2²⁵ = 686404217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 719958593 and 719958602.

It is not a weakly prime, because it can be changed into another prime (719958689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359979324 + 359979325.

It is an arithmetic number, because the mean of its divisors is an integer number (359979325).

Almost surely, 2^719958649 is an apocalyptic number.

It is an amenable number.

719958649 is a deficient number, since it is larger than the sum of its proper divisors (1).

719958649 is an equidigital number, since it uses as much as digits as its factorization.

719958649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 719958649 is about 26832.0451885427. The cubic root of 719958649 is about 896.2637905970.

The spelling of 719958649 in words is "seven hundred nineteen million, nine hundred fifty-eight thousand, six hundred forty-nine".