1864606 has 4 divisors (see below), whose sum is σ = 2796912. Its totient is φ = 932302.

The previous prime is 1864601. The next prime is 1864649. The reversal of 1864606 is 6064681.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 466150 + ... + 466153.

It is an arithmetic number, because the mean of its divisors is an integer number (699228).

2^1864606 is an apocalyptic number.

1864606 is a deficient number, since it is larger than the sum of its proper divisors (932306).

1864606 is an equidigital number, since it uses as much as digits as its factorization.

1864606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932305.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1864606 is about 1365.5057671061. The cubic root of 1864606 is about 123.0823253037.

The spelling of 1864606 in words is "one million, eight hundred sixty-four thousand, six hundred six".