6206642066 has 4 divisors (see below), whose sum is σ = 9309963102. Its totient is φ = 3103321032.

The previous prime is 6206642027. The next prime is 6206642131. The reversal of 6206642066 is 6602466026.

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., 6206130841 + 511225 = 78779^2 + 715^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1551660515 + ... + 1551660518.

Almost surely, 2^6206642066 is an apocalyptic number.

6206642066 is a deficient number, since it is larger than the sum of its proper divisors (3103321036).

6206642066 is a wasteful number, since it uses less digits than its factorization.

6206642066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103321035.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 6206642066 is about 78782.2446113336. The cubic root of 6206642066 is about 1837.7463415146.

The spelling of 6206642066 in words is "six billion, two hundred six million, six hundred forty-two thousand, sixty-six".