689351501 has 2 divisors, whose sum is σ = 689351502. Its totient is φ = 689351500.

The previous prime is 689351449. The next prime is 689351503. The reversal of 689351501 is 105153986.

689351501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 603881476 + 85470025 = 24574^2 + 9245^2 .

It is a cyclic number.

It is not a de Polignac number, because 689351501 - 2¹⁴ = 689335117 is a prime.

Together with 689351503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689351503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344675750 + 344675751.

It is an arithmetic number, because the mean of its divisors is an integer number (344675751).

Almost surely, 2^689351501 is an apocalyptic number.

It is an amenable number.

689351501 is a deficient number, since it is larger than the sum of its proper divisors (1).

689351501 is an equidigital number, since it uses as much as digits as its factorization.

689351501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 689351501 is about 26255.5042038808. The cubic root of 689351501 is about 883.3786698301.

The spelling of 689351501 in words is "six hundred eighty-nine million, three hundred fifty-one thousand, five hundred one".