1138667 has 2 divisors, whose sum is σ = 1138668. Its totient is φ = 1138666.

The previous prime is 1138649. The next prime is 1138673. The reversal of 1138667 is 7668311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1138667 - 2⁸ = 1138411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569333 + 569334.

It is an arithmetic number, because the mean of its divisors is an integer number (569334).

2^1138667 is an apocalyptic number.

1138667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138667 is an equidigital number, since it uses as much as digits as its factorization.

1138667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 1138667 is about 1067.0834081739. The cubic root of 1138667 is about 104.4236601249.

The spelling of 1138667 in words is "one million, one hundred thirty-eight thousand, six hundred sixty-seven".