2171608 has 8 divisors (see below), whose sum is σ = 4071780. Its totient is φ = 1085800.

The previous prime is 2171599. The next prime is 2171621. The reversal of 2171608 is 8061712.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 12.

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, 135718 + ... + 135733.

2^2171608 is an apocalyptic number.

It is an amenable number.

2171608 is a deficient number, since it is larger than the sum of its proper divisors (1900172).

2171608 is a wasteful number, since it uses less digits than its factorization.

2171608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271457 (or 271453 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2171608 is about 1473.6376759570. The cubic root of 2171608 is about 129.4972296580.

The spelling of 2171608 in words is "two million, one hundred seventy-one thousand, six hundred eight".