1066645015 has 8 divisors (see below), whose sum is σ = 1291937040. Its totient is φ = 845340672.

The previous prime is 1066645007. The next prime is 1066645043. The reversal of 1066645015 is 5105466601.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1066645015 - 2³ = 1066645007 is a prime.

It is a super-2 number, since 2×1066645015² = 2275463176048700450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996330 + ... + 997399.

It is an arithmetic number, because the mean of its divisors is an integer number (161492130).

Almost surely, 2^1066645015 is an apocalyptic number.

1066645015 is a deficient number, since it is larger than the sum of its proper divisors (225292025).

1066645015 is a wasteful number, since it uses less digits than its factorization.

1066645015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993841.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1066645015 is about 32659.5317633306. The cubic root of 1066645015 is about 1021.7389965295.

The spelling of 1066645015 in words is "one billion, sixty-six million, six hundred forty-five thousand, fifteen".