689351051 has 2 divisors, whose sum is σ = 689351052. Its totient is φ = 689351050.

The previous prime is 689351041. The next prime is 689351063. The reversal of 689351051 is 150153986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 689351051 - 2¹⁰ = 689350027 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 689350996 and 689351014.

It is not a weakly prime, because it can be changed into another prime (689351041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344675525 + 344675526.

It is an arithmetic number, because the mean of its divisors is an integer number (344675526).

Almost surely, 2^689351051 is an apocalyptic number.

689351051 is a deficient number, since it is larger than the sum of its proper divisors (1).

689351051 is an equidigital number, since it uses as much as digits as its factorization.

689351051 is an evil number, because the sum of its binary digits is even.

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

The square root of 689351051 is about 26255.4956342477. The cubic root of 689351051 is about 883.3784776105.

The spelling of 689351051 in words is "six hundred eighty-nine million, three hundred fifty-one thousand, fifty-one".