7708942645 has 8 divisors (see below), whose sum is σ = 9291128760. Its totient is φ = 6140222400.

The previous prime is 7708942643. The next prime is 7708942663. The reversal of 7708942645 is 5462498077.

It can be written as a sum of positive squares in 4 ways, for example, as 2384759556 + 5324183089 = 48834^2 + 72967^2 .

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

It is not a de Polignac number, because 7708942645 - 2¹ = 7708942643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7708942592 and 7708942601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7708942643) 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, 3365206 + ... + 3367495.

It is an arithmetic number, because the mean of its divisors is an integer number (1161391095).

Almost surely, 2^7708942645 is an apocalyptic number.

It is an amenable number.

7708942645 is a deficient number, since it is larger than the sum of its proper divisors (1582186115).

7708942645 is a wasteful number, since it uses less digits than its factorization.

7708942645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6732935.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The square root of 7708942645 is about 87800.5845367786. The cubic root of 7708942645 is about 1975.4449796909. Note that the first 3 decimals are identical.

The spelling of 7708942645 in words is "seven billion, seven hundred eight million, nine hundred forty-two thousand, six hundred forty-five".