1968625 has 8 divisors (see below), whose sum is σ = 2457000. Its totient is φ = 1574800.

The previous prime is 1968613. The next prime is 1968641. The reversal of 1968625 is 5268691.

It can be written as a sum of positive squares in 4 ways, for example, as 506944 + 1461681 = 712^2 + 1209^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1968625 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7750 + ... + 7999.

It is an arithmetic number, because the mean of its divisors is an integer number (307125).

2^1968625 is an apocalyptic number.

It is an amenable number.

1968625 is a deficient number, since it is larger than the sum of its proper divisors (488375).

1968625 is an equidigital number, since it uses as much as digits as its factorization.

1968625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15764 (or 15754 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 1968625 is about 1403.0769757928. The cubic root of 1968625 is about 125.3297957794.

It can be divided in two parts, 19 and 68625, that added together give a square (68644 = 262²).

The spelling of 1968625 in words is "one million, nine hundred sixty-eight thousand, six hundred twenty-five".