687354067 has 2 divisors, whose sum is σ = 687354068. Its totient is φ = 687354066.

The previous prime is 687354043. The next prime is 687354077. The reversal of 687354067 is 760453786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687354067 - 2⁷ = 687353939 is a prime.

It is a super-2 number, since 2×687354067² = 944911226842880978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (687354077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343677033 + 343677034.

It is an arithmetic number, because the mean of its divisors is an integer number (343677034).

Almost surely, 2^687354067 is an apocalyptic number.

687354067 is a deficient number, since it is larger than the sum of its proper divisors (1).

687354067 is an equidigital number, since it uses as much as digits as its factorization.

687354067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 687354067 is about 26217.4382234420. The cubic root of 687354067 is about 882.5246316157.

The spelling of 687354067 in words is "six hundred eighty-seven million, three hundred fifty-four thousand, sixty-seven".