87563081 has 8 divisors (see below), whose sum is σ = 88767744. Its totient is φ = 86365440.

The previous prime is 87563057. The next prime is 87563083. The reversal of 87563081 is 18036578.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87563081 - 2¹⁸ = 87300937 is a prime.

It is a super-2 number, since 2×87563081² = 15334586308425122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87563083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26345 + ... + 29481.

It is an arithmetic number, because the mean of its divisors is an integer number (11095968).

Almost surely, 2^87563081 is an apocalyptic number.

It is an amenable number.

87563081 is a deficient number, since it is larger than the sum of its proper divisors (1204663).

87563081 is a wasteful number, since it uses less digits than its factorization.

87563081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 87563081 is about 9357.5146807259. The cubic root of 87563081 is about 444.0586607152.

The spelling of 87563081 in words is "eighty-seven million, five hundred sixty-three thousand, eighty-one".