63378039 has 4 divisors (see below), whose sum is σ = 84504056. Its totient is φ = 42252024.

The previous prime is 63378019. The next prime is 63378067. The reversal of 63378039 is 93087336.

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

It is not a de Polignac number, because 63378039 - 2⁷ = 63377911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63377988 and 63378006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63378019) 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, 10563004 + ... + 10563009.

It is an arithmetic number, because the mean of its divisors is an integer number (21126014).

Almost surely, 2^63378039 is an apocalyptic number.

63378039 is a deficient number, since it is larger than the sum of its proper divisors (21126017).

63378039 is a wasteful number, since it uses less digits than its factorization.

63378039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21126016.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 63378039 is about 7961.0325335348. The cubic root of 63378039 is about 398.7000276733.

The spelling of 63378039 in words is "sixty-three million, three hundred seventy-eight thousand, thirty-nine".