7000665121 has 8 divisors (see below), whose sum is σ = 7380084320. Its totient is φ = 6622342272.

The previous prime is 7000665103. The next prime is 7000665137. The reversal of 7000665121 is 1215660007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7000665121 - 2⁹ = 7000664609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7000665121.

It is not an unprimeable number, because it can be changed into a prime (7000665521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260955 + ... + 286528.

It is an arithmetic number, because the mean of its divisors is an integer number (922510540).

Almost surely, 2^7000665121 is an apocalyptic number.

It is an amenable number.

7000665121 is a deficient number, since it is larger than the sum of its proper divisors (379419199).

7000665121 is a wasteful number, since it uses less digits than its factorization.

7000665121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548175.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7000665121 is about 83669.9774172313. The cubic root of 7000665121 is about 1912.9917680298.

The spelling of 7000665121 in words is "seven billion, six hundred sixty-five thousand, one hundred twenty-one".