63399385 has 24 divisors (see below), whose sum is σ = 92356416. Its totient is φ = 41580000.

The previous prime is 63399383. The next prime is 63399397. The reversal of 63399385 is 58399336.

It is not a de Polignac number, because 63399385 - 2¹ = 63399383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63399383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10 + ... + 11260.

It is an arithmetic number, because the mean of its divisors is an integer number (3848184).

Almost surely, 2^63399385 is an apocalyptic number.

It is an amenable number.

63399385 is a deficient number, since it is larger than the sum of its proper divisors (28957031).

63399385 is a wasteful number, since it uses less digits than its factorization.

63399385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11293 (or 11286 counting only the distinct ones).

The product of its digits is 524880, while the sum is 46.

The square root of 63399385 is about 7962.3730759115. The cubic root of 63399385 is about 398.7447839518.

The spelling of 63399385 in words is "sixty-three million, three hundred ninety-nine thousand, three hundred eighty-five".