687233033057 has 2 divisors, whose sum is σ = 687233033058. Its totient is φ = 687233033056.

The previous prime is 687233033023. The next prime is 687233033059. The reversal of 687233033057 is 750330332786.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667351751056 + 19881282001 = 816916^2 + 141001^2 .

It is a cyclic number.

It is not a de Polignac number, because 687233033057 - 2³⁴ = 670053163873 is a prime.

Together with 687233033059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687233033059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343616516528 + 343616516529.

It is an arithmetic number, because the mean of its divisors is an integer number (343616516529).

Almost surely, 2^687233033057 is an apocalyptic number.

It is an amenable number.

687233033057 is a deficient number, since it is larger than the sum of its proper divisors (1).

687233033057 is an equidigital number, since it uses as much as digits as its factorization.

687233033057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 687233033057 in words is "six hundred eighty-seven billion, two hundred thirty-three million, thirty-three thousand, fifty-seven".