1066654 has 4 divisors (see below), whose sum is σ = 1599984. Its totient is φ = 533326.

The previous prime is 1066651. The next prime is 1066669. The reversal of 1066654 is 4566601.

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

It is a super-2 number, since 2×1066654² = 2275501511432, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 266662 + ... + 266665.

It is an arithmetic number, because the mean of its divisors is an integer number (399996).

2^1066654 is an apocalyptic number.

1066654 is a deficient number, since it is larger than the sum of its proper divisors (533330).

1066654 is an equidigital number, since it uses as much as digits as its factorization.

1066654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533329.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1066654 is about 1032.7894267468. The cubic root of 1066654 is about 102.1741865431.

The spelling of 1066654 in words is "one million, sixty-six thousand, six hundred fifty-four".