1285066 has 4 divisors (see below), whose sum is σ = 1927602. Its totient is φ = 642532.

The previous prime is 1285061. The next prime is 1285069. The reversal of 1285066 is 6605821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6605821 = 31 ⋅213091.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 342225 = 971^2 + 585^2 .

It is not an unprimeable number, because it can be changed into a prime (1285061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321265 + ... + 321268.

2^1285066 is an apocalyptic number.

1285066 is a deficient number, since it is larger than the sum of its proper divisors (642536).

1285066 is an equidigital number, since it uses as much as digits as its factorization.

1285066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642535.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1285066 is about 1133.6075158537. The cubic root of 1285066 is about 108.7197581828.

It can be divided in two parts, 12 and 85066, that added together give a triangular number (85078 = T₄₁₂).

The spelling of 1285066 in words is "one million, two hundred eighty-five thousand, sixty-six".