5685415421 has 4 divisors (see below), whose sum is σ = 6497617632. Its totient is φ = 4873213212.

The previous prime is 5685415397. The next prime is 5685415427. The reversal of 5685415421 is 1245145865.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1245145865 = 5 ⋅249029173.

It is not a de Polignac number, because 5685415421 - 2¹⁴ = 5685399037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5685415427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406101095 + ... + 406101108.

It is an arithmetic number, because the mean of its divisors is an integer number (1624404408).

Almost surely, 2^5685415421 is an apocalyptic number.

It is an amenable number.

5685415421 is a deficient number, since it is larger than the sum of its proper divisors (812202211).

5685415421 is an equidigital number, since it uses as much as digits as its factorization.

5685415421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812202210.

The product of its digits is 192000, while the sum is 41.

The square root of 5685415421 is about 75401.6937541857. The cubic root of 5685415421 is about 1784.7911386680.

The spelling of 5685415421 in words is "five billion, six hundred eighty-five million, four hundred fifteen thousand, four hundred twenty-one".