7900605217 has 4 divisors (see below), whose sum is σ = 8034513840. Its totient is φ = 7766696596.

The previous prime is 7900605199. The next prime is 7900605221. The reversal of 7900605217 is 7125060097.

7900605217 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7900605217 - 2¹¹ = 7900603169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7900605287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66954223 + ... + 66954340.

It is an arithmetic number, because the mean of its divisors is an integer number (2008628460).

Almost surely, 2^7900605217 is an apocalyptic number.

It is an amenable number.

7900605217 is a deficient number, since it is larger than the sum of its proper divisors (133908623).

7900605217 is a wasteful number, since it uses less digits than its factorization.

7900605217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133908622.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 7900605217 is about 88885.3487195725. The cubic root of 7900605217 is about 1991.6825594580.

The spelling of 7900605217 in words is "seven billion, nine hundred million, six hundred five thousand, two hundred seventeen".