1066438 has 4 divisors (see below), whose sum is σ = 1599660. Its totient is φ = 533218.

The previous prime is 1066433. The next prime is 1066447. The reversal of 1066438 is 8346601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1066438² = 2274580015688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266608 + ... + 266611.

It is an arithmetic number, because the mean of its divisors is an integer number (399915).

2^1066438 is an apocalyptic number.

1066438 is a deficient number, since it is larger than the sum of its proper divisors (533222).

1066438 is an equidigital number, since it uses as much as digits as its factorization.

1066438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533221.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1066438 is about 1032.6848502811. The cubic root of 1066438 is about 102.1672892380.

The spelling of 1066438 in words is "one million, sixty-six thousand, four hundred thirty-eight".