206420602 has 4 divisors (see below), whose sum is σ = 309630906. Its totient is φ = 103210300.

The previous prime is 206420519. The next prime is 206420629. The reversal of 206420602 is 206024602.

It is a happy number.

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., 127938721 + 78481881 = 11311^2 + 8859^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51605149 + ... + 51605152.

Almost surely, 2^206420602 is an apocalyptic number.

206420602 is a deficient number, since it is larger than the sum of its proper divisors (103210304).

206420602 is a wasteful number, since it uses less digits than its factorization.

206420602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103210303.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 206420602 is about 14367.3449878535. The cubic root of 206420602 is about 590.9957350173.

The spelling of 206420602 in words is "two hundred six million, four hundred twenty thousand, six hundred two".