7740640682 has 4 divisors (see below), whose sum is σ = 11610961026. Its totient is φ = 3870320340.

The previous prime is 7740640667. The next prime is 7740640727. The reversal of 7740640682 is 2860460477.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7066251721 + 674388961 = 84061^2 + 25969^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935160169 + ... + 1935160172.

Almost surely, 2^7740640682 is an apocalyptic number.

7740640682 is a deficient number, since it is larger than the sum of its proper divisors (3870320344).

7740640682 is a wasteful number, since it uses less digits than its factorization.

7740640682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870320343.

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 7740640682 is about 87980.9108954891. The cubic root of 7740640682 is about 1978.1488567118.

The spelling of 7740640682 in words is "seven billion, seven hundred forty million, six hundred forty thousand, six hundred eighty-two".