7708990197 has 4 divisors (see below), whose sum is σ = 10278653600. Its totient is φ = 5139326796.

The previous prime is 7708990169. The next prime is 7708990207. The reversal of 7708990197 is 7910998077.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7910998077 = 3 ⋅2636999359.

It is not a de Polignac number, because 7708990197 - 2⁸ = 7708989941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7708994197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284831697 + ... + 1284831702.

It is an arithmetic number, because the mean of its divisors is an integer number (2569663400).

Almost surely, 2^7708990197 is an apocalyptic number.

It is an amenable number.

7708990197 is a deficient number, since it is larger than the sum of its proper divisors (2569663403).

7708990197 is a wasteful number, since it uses less digits than its factorization.

7708990197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569663402.

The product of its (nonzero) digits is 2000376, while the sum is 57.

The square root of 7708990197 is about 87800.8553318246. The cubic root of 7708990197 is about 1975.4490414744.

The spelling of 7708990197 in words is "seven billion, seven hundred eight million, nine hundred ninety thousand, one hundred ninety-seven".