655341421 has 8 divisors (see below), whose sum is σ = 749447424. Its totient is φ = 561356880.

The previous prime is 655341389. The next prime is 655341433. The reversal of 655341421 is 124143556.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 655341421 - 2⁵ = 655341389 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 (655341481) 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 7 ways as a sum of consecutive naturals, for example, 18490 + ... + 40651.

It is an arithmetic number, because the mean of its divisors is an integer number (93680928).

Almost surely, 2^655341421 is an apocalyptic number.

It is an amenable number.

655341421 is a deficient number, since it is larger than the sum of its proper divisors (94106003).

655341421 is a wasteful number, since it uses less digits than its factorization.

655341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60731.

The product of its digits is 14400, while the sum is 31.

The square root of 655341421 is about 25599.6371263344. The cubic root of 655341421 is about 868.6054290354.

Adding to 655341421 its reverse (124143556), we get a palindrome (779484977).

It can be divided in two parts, 6553 and 41421, that added together give a palindrome (47974).

The spelling of 655341421 in words is "six hundred fifty-five million, three hundred forty-one thousand, four hundred twenty-one".