1066813 has 8 divisors (see below), whose sum is σ = 1171296. Its totient is φ = 963600.

The previous prime is 1066811. The next prime is 1066817. The reversal of 1066813 is 3186601.

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

It is not a de Polignac number, because 1066813 - 2¹ = 1066811 is a prime.

It is a super-2 number, since 2×1066813² = 2276179953938, which contains 22 as substring.

It is a Duffinian number.

1066813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (146412).

2^1066813 is an apocalyptic number.

It is an amenable number.

1066813 is a deficient number, since it is larger than the sum of its proper divisors (104483).

1066813 is a wasteful number, since it uses less digits than its factorization.

1066813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1066813 is about 1032.8663998795. The cubic root of 1066813 is about 102.1792631311.

The spelling of 1066813 in words is "one million, sixty-six thousand, eight hundred thirteen".