2871668 has 6 divisors (see below), whose sum is σ = 5025426. Its totient is φ = 1435832.

The previous prime is 2871643. The next prime is 2871689. The reversal of 2871668 is 8661782.

It can be written as a sum of positive squares in only one way, i.e., 1567504 + 1304164 = 1252^2 + 1142^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358955 + ... + 358962.

It is an arithmetic number, because the mean of its divisors is an integer number (837571).

2^2871668 is an apocalyptic number.

It is an amenable number.

2871668 is a deficient number, since it is larger than the sum of its proper divisors (2153758).

2871668 is a wasteful number, since it uses less digits than its factorization.

2871668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717921 (or 717919 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 2871668 is about 1694.5996577363. The cubic root of 2871668 is about 142.1383957879.

The spelling of 2871668 in words is "two million, eight hundred seventy-one thousand, six hundred sixty-eight".