6468551 has 4 divisors (see below), whose sum is σ = 6849072. Its totient is φ = 6088032.

The previous prime is 6468541. The next prime is 6468559. The reversal of 6468551 is 1558646.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6468551 - 2²² = 2274247 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 (6468559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190235 + ... + 190268.

It is an arithmetic number, because the mean of its divisors is an integer number (1712268).

Almost surely, 2^6468551 is an apocalyptic number.

6468551 is a deficient number, since it is larger than the sum of its proper divisors (380521).

6468551 is a wasteful number, since it uses less digits than its factorization.

6468551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380520.

The product of its digits is 28800, while the sum is 35.

The square root of 6468551 is about 2543.3346221054. The cubic root of 6468551 is about 186.3240871568.

The spelling of 6468551 in words is "six million, four hundred sixty-eight thousand, five hundred fifty-one".