687072653 has 2 divisors, whose sum is σ = 687072654. Its totient is φ = 687072652.

The previous prime is 687072643. The next prime is 687072679. The reversal of 687072653 is 356270786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 593312164 + 93760489 = 24358^2 + 9683^2 .

It is a cyclic number.

It is not a de Polignac number, because 687072653 - 2⁴ = 687072637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687072643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343536326 + 343536327.

It is an arithmetic number, because the mean of its divisors is an integer number (343536327).

Almost surely, 2^687072653 is an apocalyptic number.

It is an amenable number.

687072653 is a deficient number, since it is larger than the sum of its proper divisors (1).

687072653 is an equidigital number, since it uses as much as digits as its factorization.

687072653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 687072653 is about 26212.0707499427. The cubic root of 687072653 is about 882.4041751679.

The spelling of 687072653 in words is "six hundred eighty-seven million, seventy-two thousand, six hundred fifty-three".