6423616897 has 4 divisors (see below), whose sum is σ = 6424050436. Its totient is φ = 6423183360.

The previous prime is 6423616891. The next prime is 6423616909. The reversal of 6423616897 is 7986163246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4266571761 + 2157045136 = 65319^2 + 46444^2 .

It is a cyclic number.

It is not a de Polignac number, because 6423616897 - 2⁷ = 6423616769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6423616891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193728 + ... + 224449.

It is an arithmetic number, because the mean of its divisors is an integer number (1606012609).

Almost surely, 2^6423616897 is an apocalyptic number.

It is an amenable number.

6423616897 is a deficient number, since it is larger than the sum of its proper divisors (433539).

6423616897 is a wasteful number, since it uses less digits than its factorization.

6423616897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433538.

The product of its digits is 2612736, while the sum is 52.

The square root of 6423616897 is about 80147.4696855740. The cubic root of 6423616897 is about 1858.9164785184.

The spelling of 6423616897 in words is "six billion, four hundred twenty-three million, six hundred sixteen thousand, eight hundred ninety-seven".