7657434874 has 4 divisors (see below), whose sum is σ = 11486152314. Its totient is φ = 3828717436.

The previous prime is 7657434871. The next prime is 7657434881. The reversal of 7657434874 is 4784347567.

It is a happy number.

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., 4275198225 + 3382236649 = 65385^2 + 58157^2 .

It is not an unprimeable number, because it can be changed into a prime (7657434871) 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 as a sum of consecutive naturals, namely, 1914358717 + ... + 1914358720.

Almost surely, 2^7657434874 is an apocalyptic number.

7657434874 is a deficient number, since it is larger than the sum of its proper divisors (3828717440).

7657434874 is a wasteful number, since it uses less digits than its factorization.

7657434874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828717439.

The product of its digits is 15805440, while the sum is 55.

The square root of 7657434874 is about 87506.7704466346. The cubic root of 7657434874 is about 1971.0354588142.

The spelling of 7657434874 in words is "seven billion, six hundred fifty-seven million, four hundred thirty-four thousand, eight hundred seventy-four".