720567619 has 2 divisors, whose sum is σ = 720567620. Its totient is φ = 720567618.

The previous prime is 720567607. The next prime is 720567643. The reversal of 720567619 is 916765027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720567619 - 2²⁷ = 586349891 is a prime.

It is a super-2 number, since 2×720567619² = 1038435387102658322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (720567919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360283809 + 360283810.

It is an arithmetic number, because the mean of its divisors is an integer number (360283810).

Almost surely, 2^720567619 is an apocalyptic number.

720567619 is a deficient number, since it is larger than the sum of its proper divisors (1).

720567619 is an equidigital number, since it uses as much as digits as its factorization.

720567619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 720567619 is about 26843.3906017850. The cubic root of 720567619 is about 896.5164180443.

The spelling of 720567619 in words is "seven hundred twenty million, five hundred sixty-seven thousand, six hundred nineteen".