920005685 has 4 divisors (see below), whose sum is σ = 1104006828. Its totient is φ = 736004544.

The previous prime is 920005673. The next prime is 920005729. The reversal of 920005685 is 586500029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586500029 = 79 ⋅7424051.

It can be written as a sum of positive squares in 2 ways, for example, as 301439044 + 618566641 = 17362^2 + 24871^2 .

It is a cyclic number.

It is not a de Polignac number, because 920005685 - 2⁶ = 920005621 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, 92000564 + ... + 92000573.

It is an arithmetic number, because the mean of its divisors is an integer number (276001707).

Almost surely, 2^920005685 is an apocalyptic number.

It is an amenable number.

920005685 is a deficient number, since it is larger than the sum of its proper divisors (184001143).

920005685 is a wasteful number, since it uses less digits than its factorization.

920005685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184001142.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 920005685 is about 30331.5954905112. The cubic root of 920005685 is about 972.5908295363.

The spelling of 920005685 in words is "nine hundred twenty million, five thousand, six hundred eighty-five".