6335654421 has 4 divisors (see below), whose sum is σ = 8447539232. Its totient is φ = 4223769612.

The previous prime is 6335654417. The next prime is 6335654431. The reversal of 6335654421 is 1244565336.

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 6335654421 - 2² = 6335654417 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 6335654421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6335654431) 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, 1055942401 + ... + 1055942406.

It is an arithmetic number, because the mean of its divisors is an integer number (2111884808).

Almost surely, 2^6335654421 is an apocalyptic number.

It is an amenable number.

6335654421 is a deficient number, since it is larger than the sum of its proper divisors (2111884811).

6335654421 is a wasteful number, since it uses less digits than its factorization.

6335654421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111884810.

The product of its digits is 259200, while the sum is 39.

The square root of 6335654421 is about 79596.8241891597. The cubic root of 6335654421 is about 1850.3923609966.

The spelling of 6335654421 in words is "six billion, three hundred thirty-five million, six hundred fifty-four thousand, four hundred twenty-one".