1066657147 has 2 divisors, whose sum is σ = 1066657148. Its totient is φ = 1066657146.

The previous prime is 1066657087. The next prime is 1066657181. The reversal of 1066657147 is 7417566601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1066657147 - 2⁷ = 1066657019 is a prime.

It is a super-2 number, since 2×1066657147² = 2275514938492359218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1066657247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533328573 + 533328574.

It is an arithmetic number, because the mean of its divisors is an integer number (533328574).

Almost surely, 2^1066657147 is an apocalyptic number.

1066657147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066657147 is an equidigital number, since it uses as much as digits as its factorization.

1066657147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 1066657147 is about 32659.7174972473. The cubic root of 1066657147 is about 1021.7428702614.

The spelling of 1066657147 in words is "one billion, sixty-six million, six hundred fifty-seven thousand, one hundred forty-seven".