670040040689 has 2 divisors, whose sum is σ = 670040040690. Its totient is φ = 670040040688.

The previous prime is 670040040679. The next prime is 670040040721. The reversal of 670040040689 is 986040040076.

670040040689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620143650064 + 49896390625 = 787492^2 + 223375^2 .

It is a cyclic number.

It is not a de Polignac number, because 670040040689 - 2⁴ = 670040040673 is a prime.

It is a super-2 number, since 2×670040040689² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670040040679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335020020344 + 335020020345.

It is an arithmetic number, because the mean of its divisors is an integer number (335020020345).

Almost surely, 2^670040040689 is an apocalyptic number.

It is an amenable number.

670040040689 is a deficient number, since it is larger than the sum of its proper divisors (1).

670040040689 is an equidigital number, since it uses as much as digits as its factorization.

670040040689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 670040040689 in words is "six hundred seventy billion, forty million, forty thousand, six hundred eighty-nine".