611121066 has 32 divisors (see below), whose sum is σ = 1295336448. Its totient is φ = 191546880.

The previous prime is 611121061. The next prime is 611121101. The reversal of 611121066 is 660121116.

It is not an unprimeable number, because it can be changed into a prime (611121061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148006 + ... + 152078.

It is an arithmetic number, because the mean of its divisors is an integer number (40479264).

Almost surely, 2^611121066 is an apocalyptic number.

611121066 is an abundant number, since it is smaller than the sum of its proper divisors (684215382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611121066 is a wasteful number, since it uses less digits than its factorization.

611121066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 611121066 is about 24720.8629703738. The cubic root of 611121066 is about 848.6118361374.

Subtracting 611121066 from its reverse (660121116), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 611121066 in words is "six hundred eleven million, one hundred twenty-one thousand, sixty-six".