2166602 has 4 divisors (see below), whose sum is σ = 3249906. Its totient is φ = 1083300.

The previous prime is 2166601. The next prime is 2166607. The reversal of 2166602 is 2066612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 724201 = 1201^2 + 851^2 .

It is not an unprimeable number, because it can be changed into a prime (2166601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541649 + ... + 541652.

2^2166602 is an apocalyptic number.

2166602 is a deficient number, since it is larger than the sum of its proper divisors (1083304).

2166602 is a wasteful number, since it uses less digits than its factorization.

2166602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083303.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2166602 is about 1471.9381780496. The cubic root of 2166602 is about 129.3976472446.

The spelling of 2166602 in words is "two million, one hundred sixty-six thousand, six hundred two".