1066645265 has 16 divisors (see below), whose sum is σ = 1466242560. Its totient is φ = 729706560.

The previous prime is 1066645249. The next prime is 1066645277. The reversal of 1066645265 is 5625466601.

It is not a de Polignac number, because 1066645265 - 2⁴ = 1066645249 is a prime.

It is a super-2 number, since 2×1066645265² = 2275464242693840450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20270 + ... + 50439.

It is an arithmetic number, because the mean of its divisors is an integer number (91640160).

Almost surely, 2^1066645265 is an apocalyptic number.

It is an amenable number.

1066645265 is a deficient number, since it is larger than the sum of its proper divisors (399597295).

1066645265 is an equidigital number, since it uses as much as digits as its factorization.

1066645265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71152.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 1066645265 is about 32659.5355906969. The cubic root of 1066645265 is about 1021.7390763544.

The spelling of 1066645265 in words is "one billion, sixty-six million, six hundred forty-five thousand, two hundred sixty-five".