720427907 has 2 divisors, whose sum is σ = 720427908. Its totient is φ = 720427906.

The previous prime is 720427901. The next prime is 720427909. The reversal of 720427907 is 709724027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720427907 - 2⁶ = 720427843 is a prime.

Together with 720427909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720427901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360213953 + 360213954.

It is an arithmetic number, because the mean of its divisors is an integer number (360213954).

Almost surely, 2^720427907 is an apocalyptic number.

720427907 is a deficient number, since it is larger than the sum of its proper divisors (1).

720427907 is an equidigital number, since it uses as much as digits as its factorization.

720427907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 720427907 is about 26840.7881218119. The cubic root of 720427907 is about 896.4584719684.

The spelling of 720427907 in words is "seven hundred twenty million, four hundred twenty-seven thousand, nine hundred seven".