612440105 has 4 divisors (see below), whose sum is σ = 734928132. Its totient is φ = 489952080.

The previous prime is 612440093. The next prime is 612440111. The reversal of 612440105 is 501044216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 146700544 + 465739561 = 12112^2 + 21581^2 .

It is not a de Polignac number, because 612440105 - 2⁴ = 612440089 is a prime.

It is a super-2 number, since 2×612440105² = 750165764424822050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61244006 + ... + 61244015.

It is an arithmetic number, because the mean of its divisors is an integer number (183732033).

Almost surely, 2^612440105 is an apocalyptic number.

It is an amenable number.

612440105 is a deficient number, since it is larger than the sum of its proper divisors (122488027).

612440105 is a wasteful number, since it uses less digits than its factorization.

612440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122488026.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 612440105 is about 24747.5272502123. The cubic root of 612440105 is about 849.2219431470.

The spelling of 612440105 in words is "six hundred twelve million, four hundred forty thousand, one hundred five".