187127668 has 54 divisors (see below), whose sum is σ = 411760818. Its totient is φ = 73755360.

The previous prime is 187127641. The next prime is 187127693. The reversal of 187127668 is 866721781.

It can be written as a sum of positive squares in only one way, i.e., 129549924 + 57577744 = 11382^2 + 7588^2 .

It is a super-2 number, since 2×187127668² = 70033528262236448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 690373 + ... + 690643.

Almost surely, 2^187127668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187127668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205880409).

187127668 is an abundant number, since it is smaller than the sum of its proper divisors (224633150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187127668 is a wasteful number, since it uses less digits than its factorization.

187127668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 293 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 187127668 is about 13679.4615391104. The cubic root of 187127668 is about 571.9780135647.

The spelling of 187127668 in words is "one hundred eighty-seven million, one hundred twenty-seven thousand, six hundred sixty-eight".