612546816 has 144 divisors (see below), whose sum is σ = 1927900800. Its totient is φ = 168935424.

The previous prime is 612546799. The next prime is 612546829. The reversal of 612546816 is 618645216.

It is a happy number.

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, 153940 + ... + 157868.

It is an arithmetic number, because the mean of its divisors is an integer number (13388200).

Almost surely, 2^612546816 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 612546816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (963950400).

612546816 is an abundant number, since it is smaller than the sum of its proper divisors (1315353984).

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

612546816 is a wasteful number, since it uses less digits than its factorization.

612546816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984 (or 3970 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 612546816 is about 24749.6831494870. The cubic root of 612546816 is about 849.2712628325.

The spelling of 612546816 in words is "six hundred twelve million, five hundred forty-six thousand, eight hundred sixteen".