2061623066 has 4 divisors (see below), whose sum is σ = 3092434602. Its totient is φ = 1030811532.

The previous prime is 2061623059. The next prime is 2061623071. The reversal of 2061623066 is 6603261602.

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., 1829700625 + 231922441 = 42775^2 + 15229^2 .

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, 515405765 + ... + 515405768.

Almost surely, 2^2061623066 is an apocalyptic number.

2061623066 is a deficient number, since it is larger than the sum of its proper divisors (1030811536).

2061623066 is a wasteful number, since it uses less digits than its factorization.

2061623066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030811535.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 2061623066 is about 45405.0995594107. The cubic root of 2061623066 is about 1272.7304113785.

Adding to 2061623066 its reverse (6603261602), we get a palindrome (8664884668).

The spelling of 2061623066 in words is "two billion, sixty-one million, six hundred twenty-three thousand, sixty-six".