611136672 has 96 divisors (see below), whose sum is σ = 1788091200. Its totient is φ = 181628928.

The previous prime is 611136671. The next prime is 611136677. The reversal of 611136672 is 276631116.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (611136671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21154 + ... + 40862.

It is an arithmetic number, because the mean of its divisors is an integer number (18625950).

Almost surely, 2^611136672 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 611136672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894045600).

611136672 is an abundant number, since it is smaller than the sum of its proper divisors (1176954528).

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

611136672 is a wasteful number, since it uses less digits than its factorization.

611136672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19758 (or 19750 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 611136672 is about 24721.1786126795. The cubic root of 611136672 is about 848.6190596508.

Adding to 611136672 its reverse (276631116), we get a palindrome (887767788).

The spelling of 611136672 in words is "six hundred eleven million, one hundred thirty-six thousand, six hundred seventy-two".