612668980 has 144 divisors (see below), whose sum is σ = 1646305920. Its totient is φ = 187418880.

The previous prime is 612668939. The next prime is 612668999. The reversal of 612668980 is 89866216.

It is a self number, because there is not a number n which added to its sum of digits gives 612668980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 999154 + ... + 999766.

It is an arithmetic number, because the mean of its divisors is an integer number (11432680).

Almost surely, 2^612668980 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 612668980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (823152960).

612668980 is an abundant number, since it is smaller than the sum of its proper divisors (1033636940).

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

612668980 is a wasteful number, since it uses less digits than its factorization.

612668980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 612668980 is about 24752.1510176389. The cubic root of 612668980 is about 849.3277175531.

The spelling of 612668980 in words is "six hundred twelve million, six hundred sixty-eight thousand, nine hundred eighty".