63455969 has 4 divisors (see below), whose sum is σ = 64806144. Its totient is φ = 62105796.

The previous prime is 63455963. The next prime is 63455981. The reversal of 63455969 is 96955436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63455969 is a prime.

It is a super-2 number, since 2×63455969² = 8053320003457922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 1350127 = 63455969 / (6 + 3 + 4 + 5 + 5 + 9 + 6 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63455963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675017 + ... + 675110.

It is an arithmetic number, because the mean of its divisors is an integer number (16201536).

Almost surely, 2^63455969 is an apocalyptic number.

It is an amenable number.

63455969 is a deficient number, since it is larger than the sum of its proper divisors (1350175).

63455969 is a wasteful number, since it uses less digits than its factorization.

63455969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350174.

The product of its digits is 874800, while the sum is 47.

The square root of 63455969 is about 7965.9254955090. The cubic root of 63455969 is about 398.8633753536.

The spelling of 63455969 in words is "sixty-three million, four hundred fifty-five thousand, nine hundred sixty-nine".