63378385 has 16 divisors (see below), whose sum is σ = 87970176. Its totient is φ = 42933888.

The previous prime is 63378361. The next prime is 63378389. The reversal of 63378385 is 58387336.

It is a cyclic number.

It is not a de Polignac number, because 63378385 - 2¹⁷ = 63247313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63378389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8004 + ... + 13813.

It is an arithmetic number, because the mean of its divisors is an integer number (5498136).

Almost surely, 2^63378385 is an apocalyptic number.

It is an amenable number.

63378385 is a deficient number, since it is larger than the sum of its proper divisors (24591791).

63378385 is a wasteful number, since it uses less digits than its factorization.

63378385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21912.

The product of its digits is 362880, while the sum is 43.

The square root of 63378385 is about 7961.0542643547. The cubic root of 63378385 is about 398.7007532136.

The spelling of 63378385 in words is "sixty-three million, three hundred seventy-eight thousand, three hundred eighty-five".