87411561 has 16 divisors (see below), whose sum is σ = 120457920. Its totient is φ = 56347200.

The previous prime is 87411551. The next prime is 87411563. The reversal of 87411561 is 16511478.

It is a happy number.

It is not a de Polignac number, because 87411561 - 2⁵ = 87411529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87411563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9675 + ... + 16383.

It is an arithmetic number, because the mean of its divisors is an integer number (7528620).

Almost surely, 2^87411561 is an apocalyptic number.

It is an amenable number.

87411561 is a deficient number, since it is larger than the sum of its proper divisors (33046359).

87411561 is a wasteful number, since it uses less digits than its factorization.

87411561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856.

The product of its digits is 6720, while the sum is 33.

The square root of 87411561 is about 9349.4150084377. The cubic root of 87411561 is about 443.8023783706.

The spelling of 87411561 in words is "eighty-seven million, four hundred eleven thousand, five hundred sixty-one".