687712063 has 2 divisors, whose sum is σ = 687712064. Its totient is φ = 687712062.

The previous prime is 687712043. The next prime is 687712073. The reversal of 687712063 is 360217786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687712063 - 2¹³ = 687703871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687712043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343856031 + 343856032.

It is an arithmetic number, because the mean of its divisors is an integer number (343856032).

Almost surely, 2^687712063 is an apocalyptic number.

687712063 is a deficient number, since it is larger than the sum of its proper divisors (1).

687712063 is an equidigital number, since it uses as much as digits as its factorization.

687712063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 687712063 is about 26224.2647752039. The cubic root of 687712063 is about 882.6778207159.

The spelling of 687712063 in words is "six hundred eighty-seven million, seven hundred twelve thousand, sixty-three".