612939105 has 12 divisors (see below), whose sum is σ = 1062427860. Its totient is φ = 326900832.

The previous prime is 612939091. The next prime is 612939109. The reversal of 612939105 is 501939216.

612939105 is a `hidden beast` number, since 612 + 9 + 39 + 1 + 0 + 5 = 666.

612939105 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 72795024 + 540144081 = 8532^2 + 23241^2 .

It is a de Polignac number, because none of the positive numbers 2^k-612939105 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612939105.

It is not an unprimeable number, because it can be changed into a prime (612939109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6810390 + ... + 6810479.

It is an arithmetic number, because the mean of its divisors is an integer number (88535655).

Almost surely, 2^612939105 is an apocalyptic number.

It is an amenable number.

612939105 is a deficient number, since it is larger than the sum of its proper divisors (449488755).

612939105 is a wasteful number, since it uses less digits than its factorization.

612939105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13620880 (or 13620877 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 612939105 is about 24757.6070127951. The cubic root of 612939105 is about 849.4525217284.

The spelling of 612939105 in words is "six hundred twelve million, nine hundred thirty-nine thousand, one hundred five".