101087985 has 8 divisors (see below), whose sum is σ = 161740800. Its totient is φ = 53913584.

The previous prime is 101087981. The next prime is 101088047. The reversal of 101087985 is 589780101.

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 101087985 - 2² = 101087981 is a prime.

It is a super-2 number, since 2×101087985² = 20437561422720450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101087981) 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, 3369585 + ... + 3369614.

It is an arithmetic number, because the mean of its divisors is an integer number (20217600).

Almost surely, 2^101087985 is an apocalyptic number.

101087985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101087985 is a deficient number, since it is larger than the sum of its proper divisors (60652815).

101087985 is an equidigital number, since it uses as much as digits as its factorization.

101087985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739207.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 101087985 is about 10054.2520855606. The cubic root of 101087985 is about 465.8361415583.

The spelling of 101087985 in words is "one hundred one million, eighty-seven thousand, nine hundred eighty-five".