687037067 has 2 divisors, whose sum is σ = 687037068. Its totient is φ = 687037066.

The previous prime is 687037051. The next prime is 687037079. The reversal of 687037067 is 760730786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687037067 - 2⁴ = 687037051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687037037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343518533 + 343518534.

It is an arithmetic number, because the mean of its divisors is an integer number (343518534).

Almost surely, 2^687037067 is an apocalyptic number.

687037067 is a deficient number, since it is larger than the sum of its proper divisors (1).

687037067 is an equidigital number, since it uses as much as digits as its factorization.

687037067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 687037067 is about 26211.3919317536. The cubic root of 687037067 is about 882.3889405941.

The spelling of 687037067 in words is "six hundred eighty-seven million, thirty-seven thousand, sixty-seven".