6463155 has 32 divisors (see below), whose sum is σ = 10771200. Its totient is φ = 3307392.

The previous prime is 6463151. The next prime is 6463169. The reversal of 6463155 is 5513646.

It is not a de Polignac number, because 6463155 - 2² = 6463151 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6463151) 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 31 ways as a sum of consecutive naturals, for example, 59241 + ... + 59349.

It is an arithmetic number, because the mean of its divisors is an integer number (336600).

Almost surely, 2^6463155 is an apocalyptic number.

6463155 is a deficient number, since it is larger than the sum of its proper divisors (4308045).

6463155 is a wasteful number, since it uses less digits than its factorization.

6463155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243.

The product of its digits is 10800, while the sum is 30.

The square root of 6463155 is about 2542.2735887390. The cubic root of 6463155 is about 186.2722628523.

The spelling of 6463155 in words is "six million, four hundred sixty-three thousand, one hundred fifty-five".