947813685 has 96 divisors (see below), whose sum is σ = 1938382848. Its totient is φ = 386830080.

The previous prime is 947813653. The next prime is 947813707. The reversal of 947813685 is 586318749.

It is not a de Polignac number, because 947813685 - 2⁵ = 947813653 is a prime.

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 95 ways as a sum of consecutive naturals, for example, 549234 + ... + 550956.

It is an arithmetic number, because the mean of its divisors is an integer number (20191488).

Almost surely, 2^947813685 is an apocalyptic number.

It is an amenable number.

947813685 is an abundant number, since it is smaller than the sum of its proper divisors (990569163).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

947813685 is a wasteful number, since it uses less digits than its factorization.

947813685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1782 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 947813685 is about 30786.5828730634. The cubic root of 947813685 is about 982.2928698544.

The spelling of 947813685 in words is "nine hundred forty-seven million, eight hundred thirteen thousand, six hundred eighty-five".