660507705007 has 2 divisors, whose sum is σ = 660507705008. Its totient is φ = 660507705006.

The previous prime is 660507705001. The next prime is 660507705079. The reversal of 660507705007 is 700507705066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660507705007 - 2¹⁵ = 660507672239 is a prime.

It is a super-2 number, since 2×660507705007² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660507705001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330253852503 + 330253852504.

It is an arithmetic number, because the mean of its divisors is an integer number (330253852504).

Almost surely, 2^660507705007 is an apocalyptic number.

660507705007 is a deficient number, since it is larger than the sum of its proper divisors (1).

660507705007 is an equidigital number, since it uses as much as digits as its factorization.

660507705007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308700, while the sum is 43.

The spelling of 660507705007 in words is "six hundred sixty billion, five hundred seven million, seven hundred five thousand, seven".