689607707 has 2 divisors, whose sum is σ = 689607708. Its totient is φ = 689607706.

The previous prime is 689607701. The next prime is 689607749. The reversal of 689607707 is 707706986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 689607707 - 2²⁴ = 672830491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (689607701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344803853 + 344803854.

It is an arithmetic number, because the mean of its divisors is an integer number (344803854).

Almost surely, 2^689607707 is an apocalyptic number.

689607707 is a deficient number, since it is larger than the sum of its proper divisors (1).

689607707 is an equidigital number, since it uses as much as digits as its factorization.

689607707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 50.

The square root of 689607707 is about 26260.3828418399. The cubic root of 689607707 is about 883.4880958060.

It can be divided in two parts, 68960 and 7707, that added together give a palindrome (76667).

The spelling of 689607707 in words is "six hundred eighty-nine million, six hundred seven thousand, seven hundred seven".