87881633 has 8 divisors (see below), whose sum is σ = 100493568. Its totient is φ = 75284064.

The previous prime is 87881609. The next prime is 87881639. The reversal of 87881633 is 33618878.

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 87881633 - 2⁸ = 87881377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87881639) 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, 19085 + ... + 23237.

It is an arithmetic number, because the mean of its divisors is an integer number (12561696).

Almost surely, 2^87881633 is an apocalyptic number.

It is an amenable number.

87881633 is a deficient number, since it is larger than the sum of its proper divisors (12611935).

87881633 is a wasteful number, since it uses less digits than its factorization.

87881633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7183.

The product of its digits is 193536, while the sum is 44.

The square root of 87881633 is about 9374.5204143999. The cubic root of 87881633 is about 444.5964999559.

The spelling of 87881633 in words is "eighty-seven million, eight hundred eighty-one thousand, six hundred thirty-three".