6908788997 has 4 divisors (see below), whose sum is σ = 7536860736. Its totient is φ = 6280717260.

The previous prime is 6908788981. The next prime is 6908789003. The reversal of 6908788997 is 7998878096.

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 6908788997 - 2⁴ = 6908788981 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 6908788997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6908788907) 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, 314035853 + ... + 314035874.

It is an arithmetic number, because the mean of its divisors is an integer number (1884215184).

Almost surely, 2^6908788997 is an apocalyptic number.

It is an amenable number.

6908788997 is a deficient number, since it is larger than the sum of its proper divisors (628071739).

6908788997 is a wasteful number, since it uses less digits than its factorization.

6908788997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628071738.

The product of its (nonzero) digits is 109734912, while the sum is 71.

The square root of 6908788997 is about 83119.1253382758. The cubic root of 6908788997 is about 1904.5862427411.

The spelling of 6908788997 in words is "six billion, nine hundred eight million, seven hundred eighty-eight thousand, nine hundred ninety-seven".