7688205992 has 8 divisors (see below), whose sum is σ = 14415386250. Its totient is φ = 3844102992.

The previous prime is 7688205991. The next prime is 7688206013. The reversal of 7688205992 is 2995028867.

It can be written as a sum of positive squares in only one way, i.e., 6351133636 + 1337072356 = 79694^2 + 36566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×7688205992² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7688205991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480512867 + ... + 480512882.

Almost surely, 2^7688205992 is an apocalyptic number.

It is an amenable number.

7688205992 is a deficient number, since it is larger than the sum of its proper divisors (6727180258).

7688205992 is a wasteful number, since it uses less digits than its factorization.

7688205992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961025755 (or 961025751 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 7688205992 is about 87682.4155232963. The cubic root of 7688205992 is about 1973.6721078291.

The spelling of 7688205992 in words is "seven billion, six hundred eighty-eight million, two hundred five thousand, nine hundred ninety-two".