621011066 has 8 divisors (see below), whose sum is σ = 1003171764. Its totient is φ = 286620480.

The previous prime is 621011033. The next prime is 621011089. The reversal of 621011066 is 660110126.

It can be written as a sum of positive squares in 2 ways, for example, as 496353841 + 124657225 = 22279^2 + 11165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 11942495 + ... + 11942546.

Almost surely, 2^621011066 is an apocalyptic number.

621011066 is a deficient number, since it is larger than the sum of its proper divisors (382160698).

621011066 is a wasteful number, since it uses less digits than its factorization.

621011066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23885056.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 621011066 is about 24920.0936194068. The cubic root of 621011066 is about 853.1651615956.

The spelling of 621011066 in words is "six hundred twenty-one million, eleven thousand, sixty-six".