561464 has 8 divisors (see below), whose sum is σ = 1052760. Its totient is φ = 280728.

The previous prime is 561461. The next prime is 561521. The reversal of 561464 is 464165.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561461) 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 as a sum of consecutive naturals, namely, 35084 + ... + 35099.

It is an arithmetic number, because the mean of its divisors is an integer number (131595).

2⁵⁶¹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

561464 is a deficient number, since it is larger than the sum of its proper divisors (491296).

561464 is a wasteful number, since it uses less digits than its factorization.

561464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70189 (or 70185 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 561464 is about 749.3090150265. The cubic root of 561464 is about 82.4974716091.

The spelling of 561464 in words is "five hundred sixty-one thousand, four hundred sixty-four".