689589001 has 2 divisors, whose sum is σ = 689589002. Its totient is φ = 689589000.

The previous prime is 689588987. The next prime is 689589011. The reversal of 689589001 is 100985986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579653776 + 109935225 = 24076^2 + 10485^2 .

It is a cyclic number.

It is not a de Polignac number, because 689589001 - 2¹⁵ = 689556233 is a prime.

It is not a weakly prime, because it can be changed into another prime (689589011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344794500 + 344794501.

It is an arithmetic number, because the mean of its divisors is an integer number (344794501).

Almost surely, 2^689589001 is an apocalyptic number.

It is an amenable number.

689589001 is a deficient number, since it is larger than the sum of its proper divisors (1).

689589001 is an equidigital number, since it uses as much as digits as its factorization.

689589001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 689589001 is about 26260.0266755386. The cubic root of 689589001 is about 883.4801073619.

The spelling of 689589001 in words is "six hundred eighty-nine million, five hundred eighty-nine thousand, one".