612444066 has 32 divisors (see below), whose sum is σ = 1333946880. Its totient is φ = 186324864.

The previous prime is 612444061. The next prime is 612444073. The reversal of 612444066 is 660444216.

It is a super-2 number, since 2×612444066² = 750175467957224712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612444061) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 37170 + ... + 51053.

It is an arithmetic number, because the mean of its divisors is an integer number (41685840).

Almost surely, 2^612444066 is an apocalyptic number.

612444066 is an abundant number, since it is smaller than the sum of its proper divisors (721502814).

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

612444066 is a wasteful number, since it uses less digits than its factorization.

612444066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88330.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 612444066 is about 24747.6072782805. The cubic root of 612444066 is about 849.2237739442.

The spelling of 612444066 in words is "six hundred twelve million, four hundred forty-four thousand, sixty-six".