7645838266 has 12 divisors (see below), whose sum is σ = 12606155226. Its totient is φ = 3475380920.

The previous prime is 7645838251. The next prime is 7645838267. The reversal of 7645838266 is 6628385467.

It can be written as a sum of positive squares in only one way, i.e., 5576953041 + 2068885225 = 74679^2 + 45485^2 .

It is not an unprimeable number, because it can be changed into a prime (7645838267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15796945 + ... + 15797428.

Almost surely, 2^7645838266 is an apocalyptic number.

7645838266 is a deficient number, since it is larger than the sum of its proper divisors (4960316960).

7645838266 is a wasteful number, since it uses less digits than its factorization.

7645838266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31594397 (or 31594386 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 55.

The square root of 7645838266 is about 87440.4841363541. The cubic root of 7645838266 is about 1970.0399612257.

The spelling of 7645838266 in words is "seven billion, six hundred forty-five million, eight hundred thirty-eight thousand, two hundred sixty-six".