1066431 has 8 divisors (see below), whose sum is σ = 1467904. Its totient is φ = 687960.

The previous prime is 1066423. The next prime is 1066433. The reversal of 1066431 is 1346601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1066431 - 2³ = 1066423 is a prime.

It is a super-2 number, since 2×1066431² = 2274550155522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1066398 and 1066407.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5641 + ... + 5826.

It is an arithmetic number, because the mean of its divisors is an integer number (183488).

2^1066431 is an apocalyptic number.

1066431 is a deficient number, since it is larger than the sum of its proper divisors (401473).

1066431 is a wasteful number, since it uses less digits than its factorization.

1066431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1066431 is about 1032.6814610518. The cubic root of 1066431 is about 102.1670656987.

The spelling of 1066431 in words is "one million, sixty-six thousand, four hundred thirty-one".