6612400505 has 4 divisors (see below), whose sum is σ = 7934880612. Its totient is φ = 5289920400.

The previous prime is 6612400481. The next prime is 6612400579. The reversal of 6612400505 is 5050042166.

6612400505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 2651838016 + 3960562489 = 51496^2 + 62933^2 .

It is not a de Polignac number, because 6612400505 - 2¹⁰ = 6612399481 is a prime.

It is a Duffinian number.

It is a Curzon 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, 661240046 + ... + 661240055.

It is an arithmetic number, because the mean of its divisors is an integer number (1983720153).

Almost surely, 2^6612400505 is an apocalyptic number.

It is an amenable number.

6612400505 is a deficient number, since it is larger than the sum of its proper divisors (1322480107).

6612400505 is a wasteful number, since it uses less digits than its factorization.

6612400505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322480106.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 6612400505 is about 81316.6680638109. The cubic root of 6612400505 is about 1876.9514975422.

The spelling of 6612400505 in words is "six billion, six hundred twelve million, four hundred thousand, five hundred five".