1561064 has 16 divisors (see below), whose sum is σ = 2963520. Its totient is φ = 770800.

The previous prime is 1561039. The next prime is 1561069. The reversal of 1561064 is 4601651.

It is not an unprimeable number, because it can be changed into a prime (1561069) 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, 512 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^1561064 is an apocalyptic number.

It is an amenable number.

1561064 is a deficient number, since it is larger than the sum of its proper divisors (1402456).

1561064 is a wasteful number, since it uses less digits than its factorization.

1561064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1561064 is about 1249.4254679652. The cubic root of 1561064 is about 116.0041615629.

The spelling of 1561064 in words is "one million, five hundred sixty-one thousand, sixty-four".