1066915 has 4 divisors (see below), whose sum is σ = 1280304. Its totient is φ = 853528.

The previous prime is 1066913. The next prime is 1066931. The reversal of 1066915 is 5196601.

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 1066915 - 2¹ = 1066913 is a prime.

It is a super-2 number, since 2×1066915² = 2276615234450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066913) 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, 106687 + ... + 106696.

It is an arithmetic number, because the mean of its divisors is an integer number (320076).

2^1066915 is an apocalyptic number.

1066915 is a deficient number, since it is larger than the sum of its proper divisors (213389).

1066915 is an equidigital number, since it uses as much as digits as its factorization.

1066915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213388.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1066915 is about 1032.9157758501. The cubic root of 1066915 is about 102.1825195445.

It can be divided in two parts, 106 and 6915, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 1066915 in words is "one million, sixty-six thousand, nine hundred fifteen".