7998500069 has 8 divisors (see below), whose sum is σ = 9175127040. Its totient is φ = 6830369136.

The previous prime is 7998500057. The next prime is 7998500071. The reversal of 7998500069 is 9600058997.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7998500069 is a prime.

It is a super-2 number, since 2×7998500069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998500009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121989 + ... + 2125754.

It is an arithmetic number, because the mean of its divisors is an integer number (1146890880).

Almost surely, 2^7998500069 is an apocalyptic number.

It is an amenable number.

7998500069 is a deficient number, since it is larger than the sum of its proper divisors (1176626971).

7998500069 is a wasteful number, since it uses less digits than its factorization.

7998500069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248019.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 7998500069 is about 89434.3338377382. Note that the first 3 decimals coincide. The cubic root of 7998500069 is about 1999.8749979374.

The spelling of 7998500069 in words is "seven billion, nine hundred ninety-eight million, five hundred thousand, sixty-nine".