1664254 has 8 divisors (see below), whose sum is σ = 2530800. Its totient is φ = 820656.

The previous prime is 1664251. The next prime is 1664261. The reversal of 1664254 is 4524661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664251) 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 in 3 ways as a sum of consecutive naturals, for example, 5554 + ... + 5845.

It is an arithmetic number, because the mean of its divisors is an integer number (316350).

2^1664254 is an apocalyptic number.

1664254 is a deficient number, since it is larger than the sum of its proper divisors (866546).

1664254 is a wasteful number, since it uses less digits than its factorization.

1664254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11474.

The product of its digits is 5760, while the sum is 28.

The square root of 1664254 is about 1290.0596885416. The cubic root of 1664254 is about 118.5058718686.

The spelling of 1664254 in words is "one million, six hundred sixty-four thousand, two hundred fifty-four".