1725664 has 12 divisors (see below), whose sum is σ = 3397464. Its totient is φ = 862816.

The previous prime is 1725641. The next prime is 1725671. The reversal of 1725664 is 4665271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26932 + ... + 26995.

It is an arithmetic number, because the mean of its divisors is an integer number (283122).

2^1725664 is an apocalyptic number.

It is an amenable number.

1725664 is a deficient number, since it is larger than the sum of its proper divisors (1671800).

1725664 is an equidigital number, since it uses as much as digits as its factorization.

1725664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53937 (or 53929 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 1725664 is about 1313.6453098154. The cubic root of 1725664 is about 119.9459015409.

The spelling of 1725664 in words is "one million, seven hundred twenty-five thousand, six hundred sixty-four".