616065648 has 80 divisors (see below), whose sum is σ = 1740638592. Its totient is φ = 186208000.

The previous prime is 616065623. The next prime is 616065673. The reversal of 616065648 is 846560616.

It is an interprime number because it is at equal distance from previous prime (616065623) and next prime (616065673).

It is a super-3 number, since 3×616065648³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 242143 + ... + 244673.

Almost surely, 2^616065648 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 616065648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870319296).

616065648 is an abundant number, since it is smaller than the sum of its proper divisors (1124572944).

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

616065648 is a wasteful number, since it uses less digits than its factorization.

616065648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014 (or 3008 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 616065648 is about 24820.6697733965. The cubic root of 616065648 is about 850.8943978861.

The spelling of 616065648 in words is "six hundred sixteen million, sixty-five thousand, six hundred forty-eight".