945688685 has 4 divisors (see below), whose sum is σ = 1134826428. Its totient is φ = 756550944.

The previous prime is 945688651. The next prime is 945688703. The reversal of 945688685 is 586886549.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256416169 + 689272516 = 16013^2 + 26254^2 .

It is a cyclic number.

It is not a de Polignac number, because 945688685 - 2²⁴ = 928911469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94568864 + ... + 94568873.

It is an arithmetic number, because the mean of its divisors is an integer number (283706607).

Almost surely, 2^945688685 is an apocalyptic number.

It is an amenable number.

945688685 is a deficient number, since it is larger than the sum of its proper divisors (189137743).

945688685 is a wasteful number, since it uses less digits than its factorization.

945688685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189137742.

The product of its digits is 16588800, while the sum is 59.

The square root of 945688685 is about 30752.0517201698. The cubic root of 945688685 is about 981.5582197533.

The spelling of 945688685 in words is "nine hundred forty-five million, six hundred eighty-eight thousand, six hundred eighty-five".