261108087 has 8 divisors (see below), whose sum is σ = 348529920. Its totient is φ = 173879160.

The previous prime is 261108073. The next prime is 261108101. The reversal of 261108087 is 780801162.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (261108073) and next prime (261108101).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 261108087 - 2⁸ = 261107831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261108017) 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, 45037 + ... + 50502.

It is an arithmetic number, because the mean of its divisors is an integer number (43566240).

Almost surely, 2^261108087 is an apocalyptic number.

261108087 is a deficient number, since it is larger than the sum of its proper divisors (87421833).

261108087 is an equidigital number, since it uses as much as digits as its factorization.

261108087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96453.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 261108087 is about 16158.8392838100. The cubic root of 261108087 is about 639.1558589349.

The spelling of 261108087 in words is "two hundred sixty-one million, one hundred eight thousand, eighty-seven".