1866479 has 4 divisors (see below), whose sum is σ = 1926720. Its totient is φ = 1806240.

The previous prime is 1866467. The next prime is 1866499. The reversal of 1866479 is 9746681.

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

It is a cyclic number.

It is not a de Polignac number, because 1866479 - 2⁸ = 1866223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30074 + ... + 30135.

It is an arithmetic number, because the mean of its divisors is an integer number (481680).

2^1866479 is an apocalyptic number.

1866479 is a deficient number, since it is larger than the sum of its proper divisors (60241).

1866479 is an equidigital number, since it uses as much as digits as its factorization.

1866479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60240.

The product of its digits is 72576, while the sum is 41.

The square root of 1866479 is about 1366.1914214341. The cubic root of 1866479 is about 123.1235236495.

The spelling of 1866479 in words is "one million, eight hundred sixty-six thousand, four hundred seventy-nine".