561701 has 8 divisors (see below), whose sum is σ = 664320. Its totient is φ = 464688.

The previous prime is 561667. The next prime is 561703. The reversal of 561701 is 107165.

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

It is a de Polignac number, because none of the positive numbers 2^k-561701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (83040).

2⁵⁶¹⁷⁰¹ is an apocalyptic number.

It is an amenable number.

561701 is a deficient number, since it is larger than the sum of its proper divisors (102619).

561701 is a wasteful number, since it uses less digits than its factorization.

561701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 561701 is about 749.4671440430. The cubic root of 561701 is about 82.5090776666.

Adding to 561701 its reverse (107165), we get a palindrome (668866).

It can be divided in two parts, 5 and 61701, that multiplied together give a triangular number (308505 = T₇₈₅).

The spelling of 561701 in words is "five hundred sixty-one thousand, seven hundred one".