920065861 has 32 divisors (see below), whose sum is σ = 1177142400. Its totient is φ = 706164480.

The previous prime is 920065859. The next prime is 920065877. The reversal of 920065861 is 168560029.

It is a cyclic number.

It is not a de Polignac number, because 920065861 - 2¹ = 920065859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 920065861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920065841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72955 + ... + 84631.

It is an arithmetic number, because the mean of its divisors is an integer number (36785700).

Almost surely, 2^920065861 is an apocalyptic number.

It is an amenable number.

920065861 is a deficient number, since it is larger than the sum of its proper divisors (257076539).

920065861 is a wasteful number, since it uses less digits than its factorization.

920065861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11749.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 920065861 is about 30332.5874432103. The cubic root of 920065861 is about 972.6120342421.

The spelling of 920065861 in words is "nine hundred twenty million, sixty-five thousand, eight hundred sixty-one".