561148767 has 48 divisors (see below), whose sum is σ = 875826432. Its totient is φ = 344966400.

The previous prime is 561148741. The next prime is 561148799. The reversal of 561148767 is 767841165.

561148767 is a `hidden beast` number, since 561 + 1 + 4 + 87 + 6 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-561148767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561148967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2471908 + ... + 2472134.

It is an arithmetic number, because the mean of its divisors is an integer number (18246384).

Almost surely, 2^561148767 is an apocalyptic number.

561148767 is a deficient number, since it is larger than the sum of its proper divisors (314677665).

561148767 is a wasteful number, since it uses less digits than its factorization.

561148767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 505 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 561148767 is about 23688.5788303140. The cubic root of 561148767 is about 824.8202936405.

The spelling of 561148767 in words is "five hundred sixty-one million, one hundred forty-eight thousand, seven hundred sixty-seven".