7687626445 has 8 divisors (see below), whose sum is σ = 9237342744. Its totient is φ = 6141973824.

The previous prime is 7687626407. The next prime is 7687626449. The reversal of 7687626445 is 5446267867.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2618471241 + 5069155204 = 51171^2 + 71198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7687626445 - 2²⁷ = 7553408717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7687626449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011754 + ... + 1019323.

It is an arithmetic number, because the mean of its divisors is an integer number (1154667843).

Almost surely, 2^7687626445 is an apocalyptic number.

It is an amenable number.

7687626445 is a deficient number, since it is larger than the sum of its proper divisors (1549716299).

7687626445 is a wasteful number, since it uses less digits than its factorization.

7687626445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031839.

The product of its digits is 13547520, while the sum is 55.

The square root of 7687626445 is about 87679.1106535645. The cubic root of 7687626445 is about 1973.6225139233.

The spelling of 7687626445 in words is "seven billion, six hundred eighty-seven million, six hundred twenty-six thousand, four hundred forty-five".