7657734657 has 4 divisors (see below), whose sum is σ = 10210312880. Its totient is φ = 5105156436.

The previous prime is 7657734631. The next prime is 7657734661. The reversal of 7657734657 is 7564377567.

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 not a de Polignac number, because 7657734657 - 2¹⁵ = 7657701889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7657734597 and 7657734606.

It is not an unprimeable number, because it can be changed into a prime (7257734657) 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, 1276289107 + ... + 1276289112.

It is an arithmetic number, because the mean of its divisors is an integer number (2552578220).

Almost surely, 2^7657734657 is an apocalyptic number.

It is an amenable number.

7657734657 is a deficient number, since it is larger than the sum of its proper divisors (2552578223).

7657734657 is a wasteful number, since it uses less digits than its factorization.

7657734657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552578222.

The product of its digits is 25930800, while the sum is 57.

The square root of 7657734657 is about 87508.4833430451. The cubic root of 7657734657 is about 1971.0611800129.

The spelling of 7657734657 in words is "seven billion, six hundred fifty-seven million, seven hundred thirty-four thousand, six hundred fifty-seven".