621311066 has 8 divisors (see below), whose sum is σ = 932366784. Its totient is φ = 310522140.

The previous prime is 621311059. The next prime is 621311071. The reversal of 621311066 is 660113126.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60770 + ... + 70253.

It is an arithmetic number, because the mean of its divisors is an integer number (116545848).

Almost surely, 2^621311066 is an apocalyptic number.

621311066 is a deficient number, since it is larger than the sum of its proper divisors (311055718).

621311066 is a wasteful number, since it uses less digits than its factorization.

621311066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133396.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 621311066 is about 24926.1121316582. The cubic root of 621311066 is about 853.3025227252.

The spelling of 621311066 in words is "six hundred twenty-one million, three hundred eleven thousand, sixty-six".