63955011 has 4 divisors (see below), whose sum is σ = 85273352. Its totient is φ = 42636672.

The previous prime is 63955009. The next prime is 63955027. The reversal of 63955011 is 11055936.

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

It is not a de Polignac number, because 63955011 - 2¹ = 63955009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63955011.

It is not an unprimeable number, because it can be changed into a prime (63950011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10659166 + ... + 10659171.

It is an arithmetic number, because the mean of its divisors is an integer number (21318338).

Almost surely, 2^63955011 is an apocalyptic number.

63955011 is a deficient number, since it is larger than the sum of its proper divisors (21318341).

63955011 is a wasteful number, since it uses less digits than its factorization.

63955011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21318340.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 63955011 is about 7997.1876931831. The cubic root of 63955011 is about 399.9062509462.

The spelling of 63955011 in words is "sixty-three million, nine hundred fifty-five thousand, eleven".