611221930 has 32 divisors (see below), whose sum is σ = 1201625280. Its totient is φ = 222001920.

The previous prime is 611221903. The next prime is 611221931. The reversal of 611221930 is 39122116.

It is a junction number, because it is equal to n+sod(n) for n = 611221895 and 611221904.

It is not an unprimeable number, because it can be changed into a prime (611221931) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 108237 + ... + 113743.

It is an arithmetic number, because the mean of its divisors is an integer number (37550790).

Almost surely, 2^611221930 is an apocalyptic number.

611221930 is a deficient number, since it is larger than the sum of its proper divisors (590403350).

611221930 is a wasteful number, since it uses less digits than its factorization.

611221930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6534.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 611221930 is about 24722.9029444360. The cubic root of 611221930 is about 848.6585206545.

The spelling of 611221930 in words is "six hundred eleven million, two hundred twenty-one thousand, nine hundred thirty".