1720701 has 6 divisors (see below), whose sum is σ = 2485470. Its totient is φ = 1147128.

The previous prime is 1720679. The next prime is 1720703. The reversal of 1720701 is 1070271.

It can be written as a sum of positive squares in only one way, i.e., 1232100 + 488601 = 1110^2 + 699^2 .

It is not a de Polignac number, because 1720701 - 2⁵ = 1720669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720703) 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 5 ways as a sum of consecutive naturals, for example, 95586 + ... + 95603.

It is an arithmetic number, because the mean of its divisors is an integer number (414245).

2^1720701 is an apocalyptic number.

It is an amenable number.

1720701 is a deficient number, since it is larger than the sum of its proper divisors (764769).

1720701 is a wasteful number, since it uses less digits than its factorization.

1720701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191195 (or 191192 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 1720701 is about 1311.7549313801. The cubic root of 1720701 is about 119.8308032159.

Adding to 1720701 its reverse (1070271), we get a palindrome (2790972).

The spelling of 1720701 in words is "one million, seven hundred twenty thousand, seven hundred one".