1005665147 has 2 divisors, whose sum is σ = 1005665148. Its totient is φ = 1005665146.

The previous prime is 1005665137. The next prime is 1005665153. The reversal of 1005665147 is 7415665001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1005665147 - 2⁴ = 1005665131 is a prime.

It is a super-2 number, since 2×1005665147² = 2022724775781063218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005665137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502832573 + 502832574.

It is an arithmetic number, because the mean of its divisors is an integer number (502832574).

Almost surely, 2^1005665147 is an apocalyptic number.

1005665147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005665147 is an equidigital number, since it uses as much as digits as its factorization.

1005665147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1005665147 is about 31712.2239365201. The cubic root of 1005665147 is about 1001.8848275265.

The spelling of 1005665147 in words is "one billion, five million, six hundred sixty-five thousand, one hundred forty-seven".