611878212 has 120 divisors (see below), whose sum is σ = 1847815200. Its totient is φ = 174493440.

The previous prime is 611878207. The next prime is 611878249. The reversal of 611878212 is 212878116.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 55539 + ... + 65637.

It is an arithmetic number, because the mean of its divisors is an integer number (15398460).

Almost surely, 2^611878212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611878212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923907600).

611878212 is an abundant number, since it is smaller than the sum of its proper divisors (1235936988).

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

611878212 is a wasteful number, since it uses less digits than its factorization.

611878212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10143 (or 10132 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 611878212 is about 24736.1721371760. The cubic root of 611878212 is about 848.9621529159.

The spelling of 611878212 in words is "six hundred eleven million, eight hundred seventy-eight thousand, two hundred twelve".