687056033 has 2 divisors, whose sum is σ = 687056034. Its totient is φ = 687056032.

The previous prime is 687056009. The next prime is 687056077. The reversal of 687056033 is 330650786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 570588769 + 116467264 = 23887^2 + 10792^2 .

It is a cyclic number.

It is not a de Polignac number, because 687056033 - 2¹⁶ = 686990497 is a prime.

It is not a weakly prime, because it can be changed into another prime (687056833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343528016 + 343528017.

It is an arithmetic number, because the mean of its divisors is an integer number (343528017).

Almost surely, 2^687056033 is an apocalyptic number.

It is an amenable number.

687056033 is a deficient number, since it is larger than the sum of its proper divisors (1).

687056033 is an equidigital number, since it uses as much as digits as its factorization.

687056033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 687056033 is about 26211.7537185134. The cubic root of 687056033 is about 882.3970601146.

The spelling of 687056033 in words is "six hundred eighty-seven million, fifty-six thousand, thirty-three".