846743661 has 12 divisors (see below), whose sum is σ = 1225512288. Its totient is φ = 563370504.

The previous prime is 846743621. The next prime is 846743663. The reversal of 846743661 is 166347648.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-846743661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846743663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88995 + ... + 98048.

It is an arithmetic number, because the mean of its divisors is an integer number (102126024).

Almost surely, 2^846743661 is an apocalyptic number.

It is an amenable number.

846743661 is a deficient number, since it is larger than the sum of its proper divisors (378768627).

846743661 is a wasteful number, since it uses less digits than its factorization.

846743661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187552 (or 187549 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 846743661 is about 29098.8601323145. The cubic root of 846743661 is about 946.0570317098.

The spelling of 846743661 in words is "eight hundred forty-six million, seven hundred forty-three thousand, six hundred sixty-one".