612707328 has 220 divisors, whose sum is σ = 1872513720. Its totient is φ = 199507968.

The previous prime is 612707311. The next prime is 612707339. The reversal of 612707328 is 823707216.

612707328 is a `hidden beast` number, since 61 + 270 + 7 + 328 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 612707292 and 612707301.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6884308 + ... + 6884396.

It is an arithmetic number, because the mean of its divisors is an integer number (8511426).

Almost surely, 2^612707328 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 612707328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936256860).

612707328 is an abundant number, since it is smaller than the sum of its proper divisors (1259806392).

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

612707328 is an equidigital number, since it uses as much as digits as its factorization.

612707328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 612707328 is about 24752.9256452646. The cubic root of 612707328 is about 849.3454374752.

The spelling of 612707328 in words is "six hundred twelve million, seven hundred seven thousand, three hundred twenty-eight".