847645461 has 48 divisors (see below), whose sum is σ = 1402623040. Its totient is φ = 488954880.

The previous prime is 847645459. The next prime is 847645471. The reversal of 847645461 is 164546748.

847645461 is a `hidden beast` number, since 8 + 47 + 64 + 546 + 1 = 666.

It is not a de Polignac number, because 847645461 - 2¹ = 847645459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847645411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213666 + ... + 217596.

Almost surely, 2^847645461 is an apocalyptic number.

It is an amenable number.

847645461 is a deficient number, since it is larger than the sum of its proper divisors (554977579).

847645461 is a wasteful number, since it uses less digits than its factorization.

847645461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4063 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 847645461 is about 29114.3514610922. The cubic root of 847645461 is about 946.3927694991.

The spelling of 847645461 in words is "eight hundred forty-seven million, six hundred forty-five thousand, four hundred sixty-one".