6434220501 has 20 divisors (see below), whose sum is σ = 9621150924. Its totient is φ = 4285224000.

The previous prime is 6434220493. The next prime is 6434220539. The reversal of 6434220501 is 1050224346.

6434220501 is a `hidden beast` number, since 6 + 434 + 220 + 5 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3624160401 + 2810060100 = 60201^2 + 53010^2 .

It is not a de Polignac number, because 6434220501 - 2³ = 6434220493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434220101) 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 19 ways as a sum of consecutive naturals, for example, 43801 + ... + 121601.

Almost surely, 2^6434220501 is an apocalyptic number.

It is an amenable number.

6434220501 is a deficient number, since it is larger than the sum of its proper divisors (3186930423).

6434220501 is a wasteful number, since it uses less digits than its factorization.

6434220501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78834 (or 78825 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6434220501 is about 80213.5929939558. The cubic root of 6434220501 is about 1859.9387674951.

Adding to 6434220501 its reverse (1050224346), we get a palindrome (7484444847).

The spelling of 6434220501 in words is "six billion, four hundred thirty-four million, two hundred twenty thousand, five hundred one".