1066766015 has 64 divisors (see below), whose sum is σ = 1568160000. Its totient is φ = 695439360.

The previous prime is 1066765979. The next prime is 1066766023. The reversal of 1066766015 is 5106676601.

It is not a de Polignac number, because 1066766015 - 2¹⁰ = 1066764991 is a prime.

It is a super-2 number, since 2×1066766015² = 2275979461517960450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066766015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4426295 + ... + 4426535.

It is an arithmetic number, because the mean of its divisors is an integer number (24502500).

Almost surely, 2^1066766015 is an apocalyptic number.

1066766015 is a deficient number, since it is larger than the sum of its proper divisors (501393985).

1066766015 is an equidigital number, since it uses as much as digits as its factorization.

1066766015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1066766015 is about 32661.3841562173. The cubic root of 1066766015 is about 1021.7776303587. Note that the first 3 decimals are identical.

The spelling of 1066766015 in words is "one billion, sixty-six million, seven hundred sixty-six thousand, fifteen".