408202066 has 4 divisors (see below), whose sum is σ = 612303102. Its totient is φ = 204101032.

The previous prime is 408202013. The next prime is 408202073. The reversal of 408202066 is 660202804.

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., 407192041 + 1010025 = 20179^2 + 1005^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102050515 + ... + 102050518.

Almost surely, 2^408202066 is an apocalyptic number.

408202066 is a deficient number, since it is larger than the sum of its proper divisors (204101036).

408202066 is a wasteful number, since it uses less digits than its factorization.

408202066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204101035.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 408202066 is about 20204.0111364056. The cubic root of 408202066 is about 741.8083760586.

The spelling of 408202066 in words is "four hundred eight million, two hundred two thousand, sixty-six".