1664794 has 8 divisors (see below), whose sum is σ = 2504160. Its totient is φ = 830076.

The previous prime is 1664771. The next prime is 1664797. The reversal of 1664794 is 4974661.

1664794 = T₁₀₅₂ + T₁₀₅₃ + T₁₀₅₄.

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

It is not an unprimeable number, because it can be changed into a prime (1664797) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 54 + ... + 1825.

It is an arithmetic number, because the mean of its divisors is an integer number (313020).

2^1664794 is an apocalyptic number.

1664794 is the 1054-th centered triangular number.

1664794 is a deficient number, since it is larger than the sum of its proper divisors (839366).

1664794 is a wasteful number, since it uses less digits than its factorization.

1664794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its digits is 36288, while the sum is 37.

The square root of 1664794 is about 1290.2689642086. The cubic root of 1664794 is about 118.5186876710.

The spelling of 1664794 in words is "one million, six hundred sixty-four thousand, seven hundred ninety-four".