667210242487 has 2 divisors, whose sum is σ = 667210242488. Its totient is φ = 667210242486.

The previous prime is 667210242449. The next prime is 667210242557. The reversal of 667210242487 is 784242012766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667210242487 - 2⁷ = 667210242359 is a prime.

It is a super-2 number, since 2×667210242487² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 667210242487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667210242407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333605121243 + 333605121244.

It is an arithmetic number, because the mean of its divisors is an integer number (333605121244).

Almost surely, 2^667210242487 is an apocalyptic number.

667210242487 is a deficient number, since it is larger than the sum of its proper divisors (1).

667210242487 is an equidigital number, since it uses as much as digits as its factorization.

667210242487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 667210242487 in words is "six hundred sixty-seven billion, two hundred ten million, two hundred forty-two thousand, four hundred eighty-seven".