621120506 has 8 divisors (see below), whose sum is σ = 937934100. Its totient is φ = 308475808.

The previous prime is 621120503. The next prime is 621120523. The reversal of 621120506 is 605021126.

621120506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 617969881 + 3150625 = 24859^2 + 1775^2 .

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

It is not an unprimeable number, because it can be changed into a prime (621120503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041851 + ... + 1042446.

Almost surely, 2^621120506 is an apocalyptic number.

621120506 is a deficient number, since it is larger than the sum of its proper divisors (316813594).

621120506 is a wasteful number, since it uses less digits than its factorization.

621120506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084448.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 621120506 is about 24922.2893410698. The cubic root of 621120506 is about 853.2152760600.

The spelling of 621120506 in words is "six hundred twenty-one million, one hundred twenty thousand, five hundred six".