1771117087 has 8 divisors (see below), whose sum is σ = 1843435440. Its totient is φ = 1699548480.

The previous prime is 1771117039. The next prime is 1771117099. The reversal of 1771117087 is 7807111771.

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

It is not a de Polignac number, because 1771117087 - 2²⁷ = 1636899359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1771117687) 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, 182614 + ... + 192067.

It is an arithmetic number, because the mean of its divisors is an integer number (230429430).

Almost surely, 2^1771117087 is an apocalyptic number.

1771117087 is a deficient number, since it is larger than the sum of its proper divisors (72318353).

1771117087 is a wasteful number, since it uses less digits than its factorization.

1771117087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374873.

The product of its (nonzero) digits is 19208, while the sum is 40.

The square root of 1771117087 is about 42084.6419374099. The cubic root of 1771117087 is about 1209.8989253732.

The spelling of 1771117087 in words is "one billion, seven hundred seventy-one million, one hundred seventeen thousand, eighty-seven".