687452611 has 2 divisors, whose sum is σ = 687452612. Its totient is φ = 687452610.

The previous prime is 687452599. The next prime is 687452671. The reversal of 687452611 is 116254786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687452611 - 2²⁷ = 553234883 is a prime.

It is not a weakly prime, because it can be changed into another prime (687452671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343726305 + 343726306.

It is an arithmetic number, because the mean of its divisors is an integer number (343726306).

Almost surely, 2^687452611 is an apocalyptic number.

687452611 is a deficient number, since it is larger than the sum of its proper divisors (1).

687452611 is an equidigital number, since it uses as much as digits as its factorization.

687452611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 687452611 is about 26219.3175159080. The cubic root of 687452611 is about 882.5668046168.

The spelling of 687452611 in words is "six hundred eighty-seven million, four hundred fifty-two thousand, six hundred eleven".