561640088 has 32 divisors (see below), whose sum is σ = 1069572000. Its totient is φ = 276452352.

The previous prime is 561640073. The next prime is 561640103. The reversal of 561640088 is 880046165.

561640088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (561640073) and next prime (561640103).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152606 + ... + 156242.

It is an arithmetic number, because the mean of its divisors is an integer number (33424125).

Almost surely, 2^561640088 is an apocalyptic number.

It is an amenable number.

561640088 is a deficient number, since it is larger than the sum of its proper divisors (507931912).

561640088 is a wasteful number, since it uses less digits than its factorization.

561640088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 561640088 is about 23698.9469808260. The cubic root of 561640088 is about 825.0609507463.

The spelling of 561640088 in words is "five hundred sixty-one million, six hundred forty thousand, eighty-eight".