720865007 has 2 divisors, whose sum is σ = 720865008. Its totient is φ = 720865006.

The previous prime is 720865003. The next prime is 720865049. The reversal of 720865007 is 700568027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 720865007 - 2² = 720865003 is a prime.

It is a super-2 number, since 2×720865007² = 1039292716634220098, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720865001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360432503 + 360432504.

It is an arithmetic number, because the mean of its divisors is an integer number (360432504).

Almost surely, 2^720865007 is an apocalyptic number.

720865007 is a deficient number, since it is larger than the sum of its proper divisors (1).

720865007 is an equidigital number, since it uses as much as digits as its factorization.

720865007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 720865007 is about 26848.9293455065. The cubic root of 720865007 is about 896.6397358971.

The spelling of 720865007 in words is "seven hundred twenty million, eight hundred sixty-five thousand, seven".