87681119 has 4 divisors (see below), whose sum is σ = 88532496. Its totient is φ = 86829744.

The previous prime is 87681079. The next prime is 87681127. The reversal of 87681119 is 91118678.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87681119 - 2⁸ = 87680863 is a prime.

It is a super-2 number, since 2×87681119² = 15375957258184322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87681619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425534 + ... + 425739.

It is an arithmetic number, because the mean of its divisors is an integer number (22133124).

Almost surely, 2^87681119 is an apocalyptic number.

87681119 is a deficient number, since it is larger than the sum of its proper divisors (851377).

87681119 is a wasteful number, since it uses less digits than its factorization.

87681119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851376.

The product of its digits is 24192, while the sum is 41.

The square root of 87681119 is about 9363.8196800237. The cubic root of 87681119 is about 444.2581064956.

The spelling of 87681119 in words is "eighty-seven million, six hundred eighty-one thousand, one hundred nineteen".