1266667007 has 2 divisors, whose sum is σ = 1266667008. Its totient is φ = 1266667006.

The previous prime is 1266666979. The next prime is 1266667027. The reversal of 1266667007 is 7007666621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1266667007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1266667027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633333503 + 633333504.

It is an arithmetic number, because the mean of its divisors is an integer number (633333504).

Almost surely, 2^1266667007 is an apocalyptic number.

1266667007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1266667007 is an equidigital number, since it uses as much as digits as its factorization.

1266667007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 1266667007 is about 35590.2656213746. The cubic root of 1266667007 is about 1081.9839524272.

The spelling of 1266667007 in words is "one billion, two hundred sixty-six million, six hundred sixty-seven thousand, seven".