612218145 has 64 divisors (see below), whose sum is σ = 1226225664. Its totient is φ = 253393920.

The previous prime is 612218141. The next prime is 612218147. The reversal of 612218145 is 541812216.

612218145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 612218145 - 2² = 612218141 is a prime.

It is a super-2 number, since 2×612218145² = 749622114134482050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612218141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 325929 + ... + 327801.

It is an arithmetic number, because the mean of its divisors is an integer number (19159776).

Almost surely, 2^612218145 is an apocalyptic number.

It is an amenable number.

612218145 is an abundant number, since it is smaller than the sum of its proper divisors (614007519).

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

612218145 is a wasteful number, since it uses less digits than its factorization.

612218145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182.

The product of its digits is 3840, while the sum is 30.

The square root of 612218145 is about 24743.0423553774. The cubic root of 612218145 is about 849.1193393296.

The spelling of 612218145 in words is "six hundred twelve million, two hundred eighteen thousand, one hundred forty-five".