63399371 has 16 divisors (see below), whose sum is σ = 78735360. Its totient is φ = 49818240.

The previous prime is 63399367. The next prime is 63399377. The reversal of 63399371 is 17399336.

It is not a de Polignac number, because 63399371 - 2² = 63399367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63399377) 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, 3566 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (4920960).

Almost surely, 2^63399371 is an apocalyptic number.

63399371 is a deficient number, since it is larger than the sum of its proper divisors (15335989).

63399371 is a wasteful number, since it uses less digits than its factorization.

63399371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15434.

The product of its digits is 91854, while the sum is 41.

The square root of 63399371 is about 7962.3721967765. The cubic root of 63399371 is about 398.7447546013.

The spelling of 63399371 in words is "sixty-three million, three hundred ninety-nine thousand, three hundred seventy-one".