612591012 has 120 divisors (see below), whose sum is σ = 1807565760. Its totient is φ = 179202240.

The previous prime is 612591011. The next prime is 612591019. The reversal of 612591012 is 210195216.

612591012 is a `hidden beast` number, since 61 + 2 + 591 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (612591011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 100393 + ... + 106319.

It is an arithmetic number, because the mean of its divisors is an integer number (15063048).

Almost surely, 2^612591012 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 612591012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903782880).

612591012 is an abundant number, since it is smaller than the sum of its proper divisors (1194974748).

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

612591012 is a wasteful number, since it uses less digits than its factorization.

612591012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983 (or 5972 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 612591012 is about 24750.5759932976. The cubic root of 612591012 is about 849.2916876605.

The spelling of 612591012 in words is "six hundred twelve million, five hundred ninety-one thousand, twelve".