63381379 has 4 divisors (see below), whose sum is σ = 64420480. Its totient is φ = 62342280.

The previous prime is 63381377. The next prime is 63381403. The reversal of 63381379 is 97318336.

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 63381379 - 2¹ = 63381377 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (63381377) 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, 519459 + ... + 519580.

It is an arithmetic number, because the mean of its divisors is an integer number (16105120).

Almost surely, 2^63381379 is an apocalyptic number.

63381379 is a deficient number, since it is larger than the sum of its proper divisors (1039101).

63381379 is a wasteful number, since it uses less digits than its factorization.

63381379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039100.

The product of its digits is 81648, while the sum is 40.

The square root of 63381379 is about 7961.2423025556. The cubic root of 63381379 is about 398.7070313333.

The spelling of 63381379 in words is "sixty-three million, three hundred eighty-one thousand, three hundred seventy-nine".