1724848661 has 2 divisors, whose sum is σ = 1724848662. Its totient is φ = 1724848660.

The previous prime is 1724848621. The next prime is 1724848673. The reversal of 1724848661 is 1668484271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1686334225 + 38514436 = 41065^2 + 6206^2 .

It is an emirp because it is prime and its reverse (1668484271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1724848661 - 2⁶ = 1724848597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1724848621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 862424330 + 862424331.

It is an arithmetic number, because the mean of its divisors is an integer number (862424331).

Almost surely, 2^1724848661 is an apocalyptic number.

It is an amenable number.

1724848661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1724848661 is an equidigital number, since it uses as much as digits as its factorization.

1724848661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 47.

The square root of 1724848661 is about 41531.2973671664. The cubic root of 1724848661 is about 1199.2700794830.

The spelling of 1724848661 in words is "one billion, seven hundred twenty-four million, eight hundred forty-eight thousand, six hundred sixty-one".