1804966 has 4 divisors (see below), whose sum is σ = 2707452. Its totient is φ = 902482.

The previous prime is 1804963. The next prime is 1804973. The reversal of 1804966 is 6694081.

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

It is a super-2 number, since 2×1804966² = 6515804522312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804961) 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 as a sum of consecutive naturals, namely, 451240 + ... + 451243.

It is an arithmetic number, because the mean of its divisors is an integer number (676863).

2^1804966 is an apocalyptic number.

1804966 is a deficient number, since it is larger than the sum of its proper divisors (902486).

1804966 is an equidigital number, since it uses as much as digits as its factorization.

1804966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902485.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1804966 is about 1343.4902307051. The cubic root of 1804966 is about 121.7558046556.

The spelling of 1804966 in words is "one million, eight hundred four thousand, nine hundred sixty-six".