1560643461 has 24 divisors (see below), whose sum is σ = 2493287160. Its totient is φ = 934436736.

The previous prime is 1560643429. The next prime is 1560643481. The reversal of 1560643461 is 1643460651.

It is a happy number.

1560643461 is a `hidden beast` number, since 1 + 5 + 6 + 0 + 643 + 4 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 62489025 + 1498154436 = 7905^2 + 38706^2 .

It is not a de Polignac number, because 1560643461 - 2⁵ = 1560643429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1560643481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175926 + ... + 184583.

It is an arithmetic number, because the mean of its divisors is an integer number (103886965).

Almost surely, 2^1560643461 is an apocalyptic number.

It is an amenable number.

1560643461 is a deficient number, since it is larger than the sum of its proper divisors (932643699).

1560643461 is a wasteful number, since it uses less digits than its factorization.

1560643461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360565 (or 360562 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1560643461 is about 39504.9802050324. The cubic root of 1560643461 is about 1159.9374374205.

The spelling of 1560643461 in words is "one billion, five hundred sixty million, six hundred forty-three thousand, four hundred sixty-one".