1066427 has 4 divisors (see below), whose sum is σ = 1129176. Its totient is φ = 1003680.

The previous prime is 1066423. The next prime is 1066433. The reversal of 1066427 is 7246601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7246601 = 47 ⋅154183.

It is not a de Polignac number, because 1066427 - 2² = 1066423 is a prime.

It is a super-2 number, since 2×1066427² = 2274533092658, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066396 and 1066405.

It is not an unprimeable number, because it can be changed into a prime (1066423) 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, 31349 + ... + 31382.

It is an arithmetic number, because the mean of its divisors is an integer number (282294).

2^1066427 is an apocalyptic number.

1066427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1066427 is a deficient number, since it is larger than the sum of its proper divisors (62749).

1066427 is an equidigital number, since it uses as much as digits as its factorization.

1066427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62748.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1066427 is about 1032.6795243443. The cubic root of 1066427 is about 102.1669379615.

The spelling of 1066427 in words is "one million, sixty-six thousand, four hundred twenty-seven".