63195861 has 4 divisors (see below), whose sum is σ = 84261152. Its totient is φ = 42130572.

The previous prime is 63195859. The next prime is 63195863. The reversal of 63195861 is 16859136.

63195861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (63195859) and next prime (63195863).

It is not a de Polignac number, because 63195861 - 2¹ = 63195859 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 (63195863) 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, 10532641 + ... + 10532646.

It is an arithmetic number, because the mean of its divisors is an integer number (21065288).

Almost surely, 2^63195861 is an apocalyptic number.

It is an amenable number.

63195861 is a deficient number, since it is larger than the sum of its proper divisors (21065291).

63195861 is a wasteful number, since it uses less digits than its factorization.

63195861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21065290.

The product of its digits is 38880, while the sum is 39.

The square root of 63195861 is about 7949.5824418645. The cubic root of 63195861 is about 398.3176445369.

The spelling of 63195861 in words is "sixty-three million, one hundred ninety-five thousand, eight hundred sixty-one".