5857847661 has 4 divisors (see below), whose sum is σ = 7810463552. Its totient is φ = 3905231772.

The previous prime is 5857847647. The next prime is 5857847683. The reversal of 5857847661 is 1667487585.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5857847661 - 2¹⁰ = 5857846637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5857847561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 976307941 + ... + 976307946.

It is an arithmetic number, because the mean of its divisors is an integer number (1952615888).

Almost surely, 2^5857847661 is an apocalyptic number.

It is an amenable number.

5857847661 is a deficient number, since it is larger than the sum of its proper divisors (1952615891).

5857847661 is a wasteful number, since it uses less digits than its factorization.

5857847661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952615890.

The product of its digits is 11289600, while the sum is 57.

The square root of 5857847661 is about 76536.5772751826. The cubic root of 5857847661 is about 1802.6553054306.

The spelling of 5857847661 in words is "five billion, eight hundred fifty-seven million, eight hundred forty-seven thousand, six hundred sixty-one".