1774234686664 has 48 divisors (see below), whose sum is σ = 3658593153600. Its totient is φ = 806032861920.

The previous prime is 1774234686649. The next prime is 1774234686701. The reversal of 1774234686664 is 4666864324771.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1774234686596 and 1774234686605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1291717 + ... + 2284075.

It is an arithmetic number, because the mean of its divisors is an integer number (76220690700).

Almost surely, 2^{1774234686664} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1774234686664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829296576800).

1774234686664 is an abundant number, since it is smaller than the sum of its proper divisors (1884358466936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1774234686664 is a wasteful number, since it uses less digits than its factorization.

1774234686664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994234 (or 994219 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 64.

The spelling of 1774234686664 in words is "one trillion, seven hundred seventy-four billion, two hundred thirty-four million, six hundred eighty-six thousand, six hundred sixty-four".