611642328 has 64 divisors (see below), whose sum is σ = 1672790400. Its totient is φ = 184826880.

The previous prime is 611642299. The next prime is 611642359. The reversal of 611642328 is 823246116.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97000 + ... + 103112.

It is an arithmetic number, because the mean of its divisors is an integer number (26137350).

Almost surely, 2^611642328 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 611642328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (836395200).

611642328 is an abundant number, since it is smaller than the sum of its proper divisors (1061148072).

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

611642328 is a wasteful number, since it uses less digits than its factorization.

611642328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512 (or 6508 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 611642328 is about 24731.4036803413. The cubic root of 611642328 is about 848.8530449684.

The spelling of 611642328 in words is "six hundred eleven million, six hundred forty-two thousand, three hundred twenty-eight".