611601606 has 96 divisors (see below), whose sum is σ = 1659879936. Its totient is φ = 158112000.

The previous prime is 611601589. The next prime is 611601607. The reversal of 611601606 is 606106116.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 611601606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611601607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 333111 + ... + 334941.

It is an arithmetic number, because the mean of its divisors is an integer number (17290416).

Almost surely, 2^611601606 is an apocalyptic number.

611601606 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 611601606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829939968).

611601606 is an abundant number, since it is smaller than the sum of its proper divisors (1048278330).

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

611601606 is a wasteful number, since it uses less digits than its factorization.

611601606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 611601606 is about 24730.5803813821. The cubic root of 611601606 is about 848.8342062019.

The spelling of 611601606 in words is "six hundred eleven million, six hundred one thousand, six hundred six".