1768225685 has 8 divisors (see below), whose sum is σ = 2142880056. Its totient is φ = 1400574400.

The previous prime is 1768225619. The next prime is 1768225687. The reversal of 1768225685 is 5865228671.

It can be written as a sum of positive squares in 4 ways, for example, as 726356401 + 1041869284 = 26951^2 + 32278^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1768225685 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 (1768225687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750214 + ... + 1751223.

It is an arithmetic number, because the mean of its divisors is an integer number (267860007).

Almost surely, 2^1768225685 is an apocalyptic number.

It is an amenable number.

1768225685 is a deficient number, since it is larger than the sum of its proper divisors (374654371).

1768225685 is a wasteful number, since it uses less digits than its factorization.

1768225685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501543.

The product of its digits is 1612800, while the sum is 50.

The square root of 1768225685 is about 42050.2756828062. The cubic root of 1768225685 is about 1209.2401679478.

The spelling of 1768225685 in words is "one billion, seven hundred sixty-eight million, two hundred twenty-five thousand, six hundred eighty-five".