846620641 has 4 divisors (see below), whose sum is σ = 847274692. Its totient is φ = 845966592.

The previous prime is 846620629. The next prime is 846620651. The reversal of 846620641 is 146026648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 600005025 + 246615616 = 24495^2 + 15704^2 .

It is a cyclic number.

It is not a de Polignac number, because 846620641 - 2¹¹ = 846618593 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 846620641.

It is not an unprimeable number, because it can be changed into a prime (846620611) 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 3 ways as a sum of consecutive naturals, for example, 325080 + ... + 327673.

It is an arithmetic number, because the mean of its divisors is an integer number (211818673).

Almost surely, 2^846620641 is an apocalyptic number.

It is an amenable number.

846620641 is a deficient number, since it is larger than the sum of its proper divisors (654051).

846620641 is a wasteful number, since it uses less digits than its factorization.

846620641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654050.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 846620641 is about 29096.7462270268. The cubic root of 846620641 is about 946.0112132100.

The spelling of 846620641 in words is "eight hundred forty-six million, six hundred twenty thousand, six hundred forty-one".