687189350363 has 2 divisors, whose sum is σ = 687189350364. Its totient is φ = 687189350362.

The previous prime is 687189350359. The next prime is 687189350459. The reversal of 687189350363 is 363053981786.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687189350363 - 2² = 687189350359 is a prime.

It is not a weakly prime, because it can be changed into another prime (687189350563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343594675181 + 343594675182.

It is an arithmetic number, because the mean of its divisors is an integer number (343594675182).

Almost surely, 2^687189350363 is an apocalyptic number.

687189350363 is a deficient number, since it is larger than the sum of its proper divisors (1).

687189350363 is an equidigital number, since it uses as much as digits as its factorization.

687189350363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 687189350363 in words is "six hundred eighty-seven billion, one hundred eighty-nine million, three hundred fifty thousand, three hundred sixty-three".