8720707 has 2 divisors, whose sum is σ = 8720708. Its totient is φ = 8720706.

The previous prime is 8720693. The next prime is 8720713. The reversal of 8720707 is 7070278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8720707 - 2²³ = 332099 is a prime.

It is not a weakly prime, because it can be changed into another prime (8720797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4360353 + 4360354.

It is an arithmetic number, because the mean of its divisors is an integer number (4360354).

Almost surely, 2^8720707 is an apocalyptic number.

8720707 is a deficient number, since it is larger than the sum of its proper divisors (1).

8720707 is an equidigital number, since it uses as much as digits as its factorization.

8720707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 8720707 is about 2953.0843198256. The cubic root of 8720707 is about 205.8340558836.

The spelling of 8720707 in words is "eight million, seven hundred twenty thousand, seven hundred seven".