63481379 has 4 divisors (see below), whose sum is σ = 68364576. Its totient is φ = 58598184.

The previous prime is 63481351. The next prime is 63481387. The reversal of 63481379 is 97318436.

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

It is a cyclic number.

It is not a de Polignac number, because 63481379 - 2¹² = 63477283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63481309) 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, 2441579 + ... + 2441604.

It is an arithmetic number, because the mean of its divisors is an integer number (17091144).

Almost surely, 2^63481379 is an apocalyptic number.

63481379 is a deficient number, since it is larger than the sum of its proper divisors (4883197).

63481379 is a wasteful number, since it uses less digits than its factorization.

63481379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883196.

The product of its digits is 108864, while the sum is 41.

The square root of 63481379 is about 7967.5202541318. The cubic root of 63481379 is about 398.9166078864.

The spelling of 63481379 in words is "sixty-three million, four hundred eighty-one thousand, three hundred seventy-nine".