1066655 has 8 divisors (see below), whose sum is σ = 1285632. Its totient is φ = 849568.

The previous prime is 1066651. The next prime is 1066669. The reversal of 1066655 is 5566601.

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

It is a cyclic number.

It is not a de Polignac number, because 1066655 - 2² = 1066651 is a prime.

It is a super-2 number, since 2×1066655² = 2275505778050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066651) 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, 1637 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (160704).

2^1066655 is an apocalyptic number.

1066655 is a deficient number, since it is larger than the sum of its proper divisors (218977).

1066655 is an equidigital number, since it uses as much as digits as its factorization.

1066655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1066655 is about 1032.7899108725. The cubic root of 1066655 is about 102.1742184729.

The spelling of 1066655 in words is "one million, sixty-six thousand, six hundred fifty-five".