87841897 has 8 divisors (see below), whose sum is σ = 103199040. Its totient is φ = 73713360.

The previous prime is 87841889. The next prime is 87841909. The reversal of 87841897 is 79814878.

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 87841897 - 2³ = 87841889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87841837) 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, 306997 + ... + 307282.

It is an arithmetic number, because the mean of its divisors is an integer number (12899880).

Almost surely, 2^87841897 is an apocalyptic number.

It is an amenable number.

87841897 is a deficient number, since it is larger than the sum of its proper divisors (15357143).

87841897 is a wasteful number, since it uses less digits than its factorization.

87841897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614303.

The product of its digits is 903168, while the sum is 52.

The square root of 87841897 is about 9372.4008130254. The cubic root of 87841897 is about 444.5294812124.

The spelling of 87841897 in words is "eighty-seven million, eight hundred forty-one thousand, eight hundred ninety-seven".