7713667645 has 4 divisors (see below), whose sum is σ = 9256401180. Its totient is φ = 6170934112.

The previous prime is 7713667609. The next prime is 7713667657. The reversal of 7713667645 is 5467663177.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5467663177 = 7213 ⋅758029.

It can be written as a sum of positive squares in 2 ways, for example, as 3344193241 + 4369474404 = 57829^2 + 66102^2 .

It is a cyclic number.

It is not a de Polignac number, because 7713667645 - 2⁷ = 7713667517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7713667592 and 7713667601.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 771366760 + ... + 771366769.

It is an arithmetic number, because the mean of its divisors is an integer number (2314100295).

Almost surely, 2^7713667645 is an apocalyptic number.

It is an amenable number.

7713667645 is a deficient number, since it is larger than the sum of its proper divisors (1542733535).

7713667645 is a wasteful number, since it uses less digits than its factorization.

7713667645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542733534.

The product of its digits is 4445280, while the sum is 52.

The square root of 7713667645 is about 87827.4879807000. The cubic root of 7713667645 is about 1975.8484968182.

The spelling of 7713667645 in words is "seven billion, seven hundred thirteen million, six hundred sixty-seven thousand, six hundred forty-five".