7706819690 has 16 divisors (see below), whose sum is σ = 13884714792. Its totient is φ = 3079963584.

The previous prime is 7706819683. The next prime is 7706819699. The reversal of 7706819690 is 969186077.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4161927169 + 3544892521 = 64513^2 + 59539^2 .

It is a super-2 number, since 2×7706819690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7706819699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333809 + ... + 356148.

Almost surely, 2^7706819690 is an apocalyptic number.

7706819690 is a deficient number, since it is larger than the sum of its proper divisors (6177895102).

7706819690 is a wasteful number, since it uses less digits than its factorization.

7706819690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691081.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The square root of 7706819690 is about 87788.4940638578. The cubic root of 7706819690 is about 1975.2636246931.

The spelling of 7706819690 in words is "seven billion, seven hundred six million, eight hundred nineteen thousand, six hundred ninety".