1066645147 has 4 divisors (see below), whose sum is σ = 1074431016. Its totient is φ = 1058859280.

The previous prime is 1066645091. The next prime is 1066645157. The reversal of 1066645147 is 7415466601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066645147 - 2¹¹ = 1066643099 is a prime.

It is a super-2 number, since 2×1066645147² = 2275463739237303218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066645157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3892729 + ... + 3893002.

It is an arithmetic number, because the mean of its divisors is an integer number (268607754).

Almost surely, 2^1066645147 is an apocalyptic number.

1066645147 is a deficient number, since it is larger than the sum of its proper divisors (7785869).

1066645147 is an equidigital number, since it uses as much as digits as its factorization.

1066645147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785868.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1066645147 is about 32659.5337841801. The cubic root of 1066645147 is about 1021.7390386771.

The spelling of 1066645147 in words is "one billion, sixty-six million, six hundred forty-five thousand, one hundred forty-seven".