612808560 has 480 divisors, whose sum is σ = 2599833600. Its totient is φ = 125908992.

The previous prime is 612808531. The next prime is 612808583. The reversal of 612808560 is 65808216.

It is a happy number.

612808560 is a `hidden beast` number, since 6 + 12 + 80 + 8 + 560 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3079341 + ... + 3079539.

It is an arithmetic number, because the mean of its divisors is an integer number (5416320).

Almost surely, 2^612808560 is an apocalyptic number.

612808560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612808560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299916800).

612808560 is an abundant number, since it is smaller than the sum of its proper divisors (1987025040).

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

612808560 is a wasteful number, since it uses less digits than its factorization.

612808560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 612808560 is about 24754.9704100005. The cubic root of 612808560 is about 849.3922114126.

The spelling of 612808560 in words is "six hundred twelve million, eight hundred eight thousand, five hundred sixty".