63992313 has 48 divisors (see below), whose sum is σ = 116453376. Its totient is φ = 32893920.

The previous prime is 63992281. The next prime is 63992329. The reversal of 63992313 is 31329936.

It is a happy number.

63992313 is a `hidden beast` number, since 639 + 9 + 2 + 3 + 13 = 666.

It is not a de Polignac number, because 63992313 - 2⁵ = 63992281 is a prime.

It is a super-2 number, since 2×63992313² = 8190032246179938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63992353) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73720 + ... + 74582.

It is an arithmetic number, because the mean of its divisors is an integer number (2426112).

Almost surely, 2^63992313 is an apocalyptic number.

63992313 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

63992313 is a deficient number, since it is larger than the sum of its proper divisors (52461063).

63992313 is a wasteful number, since it uses less digits than its factorization.

63992313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994 (or 991 counting only the distinct ones).

The product of its digits is 26244, while the sum is 36.

The square root of 63992313 is about 7999.5195480729. The cubic root of 63992313 is about 399.9839847755.

It can be divided in two parts, 639923 and 13, that added together give a palindrome (639936).

The spelling of 63992313 in words is "sixty-three million, nine hundred ninety-two thousand, three hundred thirteen".