63081493 has 4 divisors (see below), whose sum is σ = 64620108. Its totient is φ = 61542880.

The previous prime is 63081481. The next prime is 63081511. The reversal of 63081493 is 39418036.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34597924 + 28483569 = 5882^2 + 5337^2 .

It is a cyclic number.

It is not a de Polignac number, because 63081493 - 2⁹ = 63080981 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 (63081413) 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, 769246 + ... + 769327.

It is an arithmetic number, because the mean of its divisors is an integer number (16155027).

Almost surely, 2^63081493 is an apocalyptic number.

It is an amenable number.

63081493 is a deficient number, since it is larger than the sum of its proper divisors (1538615).

63081493 is a wasteful number, since it uses less digits than its factorization.

63081493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538614.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 63081493 is about 7942.3858506119. The cubic root of 63081493 is about 398.0772158123.

The spelling of 63081493 in words is "sixty-three million, eighty-one thousand, four hundred ninety-three".