87561063 has 24 divisors (see below), whose sum is σ = 137732400. Its totient is φ = 53391744.

The previous prime is 87561059. The next prime is 87561073. The reversal of 87561063 is 36016578.

It is not a de Polignac number, because 87561063 - 2² = 87561059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87561013) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3870 + ... + 13787.

It is an arithmetic number, because the mean of its divisors is an integer number (5738850).

Almost surely, 2^87561063 is an apocalyptic number.

87561063 is a deficient number, since it is larger than the sum of its proper divisors (50171337).

87561063 is a wasteful number, since it uses less digits than its factorization.

87561063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17711 (or 17708 counting only the distinct ones).

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

The square root of 87561063 is about 9357.4068523283. The cubic root of 87561063 is about 444.0552493945.

The spelling of 87561063 in words is "eighty-seven million, five hundred sixty-one thousand, sixty-three".