719697491 has 2 divisors, whose sum is σ = 719697492. Its totient is φ = 719697490.

The previous prime is 719697487. The next prime is 719697497. The reversal of 719697491 is 194796917.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 719697491 - 2² = 719697487 is a prime.

It is a super-3 number, since 3×719697491³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (719697497) 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, 359848745 + 359848746.

It is an arithmetic number, because the mean of its divisors is an integer number (359848746).

Almost surely, 2^719697491 is an apocalyptic number.

719697491 is a deficient number, since it is larger than the sum of its proper divisors (1).

719697491 is an equidigital number, since it uses as much as digits as its factorization.

719697491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 53.

The square root of 719697491 is about 26827.1782153845. The cubic root of 719697491 is about 896.1554071657.

The spelling of 719697491 in words is "seven hundred nineteen million, six hundred ninety-seven thousand, four hundred ninety-one".