561162672 has 60 divisors (see below), whose sum is σ = 1794833040. Its totient is φ = 160331904.

The previous prime is 561162653. The next prime is 561162689. The reversal of 561162672 is 276261165.

It is a happy number.

561162672 is a `hidden beast` number, since 561 + 1 + 6 + 26 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277347 + ... + 279362.

It is an arithmetic number, because the mean of its divisors is an integer number (29913884).

Almost surely, 2^561162672 is an apocalyptic number.

It is an amenable number.

561162672 is an abundant number, since it is smaller than the sum of its proper divisors (1233670368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561162672 is a wasteful number, since it uses less digits than its factorization.

561162672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556730 (or 556721 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 561162672 is about 23688.8723243636. The cubic root of 561162672 is about 824.8271064693.

The spelling of 561162672 in words is "five hundred sixty-one million, one hundred sixty-two thousand, six hundred seventy-two".