1006561562 has 8 divisors (see below), whose sum is σ = 1546667892. Its totient is φ = 491005600.

The previous prime is 1006561561. The next prime is 1006561607. The reversal of 1006561562 is 2651656001.

It can be written as a sum of positive squares in 2 ways, for example, as 800380681 + 206180881 = 28291^2 + 14359^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1006561561) 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, 6137489 + ... + 6137652.

Almost surely, 2^1006561562 is an apocalyptic number.

1006561562 is a deficient number, since it is larger than the sum of its proper divisors (540106330).

1006561562 is a wasteful number, since it uses less digits than its factorization.

1006561562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275184.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1006561562 is about 31726.3543761334. The cubic root of 1006561562 is about 1002.1824209074.

The spelling of 1006561562 in words is "one billion, six million, five hundred sixty-one thousand, five hundred sixty-two".