611228160 has 320 divisors, whose sum is σ = 2239142400. Its totient is φ = 157925376.

The previous prime is 611228159. The next prime is 611228213. The reversal of 611228160 is 61822116.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 2557321 + ... + 2557559.

It is an arithmetic number, because the mean of its divisors is an integer number (6997320).

Almost surely, 2^611228160 is an apocalyptic number.

611228160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611228160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1119571200).

611228160 is an abundant number, since it is smaller than the sum of its proper divisors (1627914240).

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

611228160 is a wasteful number, since it uses less digits than its factorization.

611228160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 611228160 is about 24723.0289406456. The cubic root of 611228160 is about 848.6614040178.

It can be divided in two parts, 61 and 1228160, that added together give a palindrome (1228221).

The spelling of 611228160 in words is "six hundred eleven million, two hundred twenty-eight thousand, one hundred sixty".