1704450661 has 4 divisors (see below), whose sum is σ = 1704539392. Its totient is φ = 1704361932.

The previous prime is 1704450623. The next prime is 1704450667. The reversal of 1704450661 is 1660544071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1660544071 = 17 ⋅97679063.

It is a cyclic number.

It is not a de Polignac number, because 1704450661 - 2⁷ = 1704450533 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 (1704450667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181 + ... + 58426.

It is an arithmetic number, because the mean of its divisors is an integer number (426134848).

Almost surely, 2^1704450661 is an apocalyptic number.

It is an amenable number.

1704450661 is a deficient number, since it is larger than the sum of its proper divisors (88731).

1704450661 is an equidigital number, since it uses as much as digits as its factorization.

1704450661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88730.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1704450661 is about 41284.9931694314. The cubic root of 1704450661 is about 1194.5238116022.

The spelling of 1704450661 in words is "one billion, seven hundred four million, four hundred fifty thousand, six hundred sixty-one".