63491336 has 16 divisors (see below), whose sum is σ = 119513340. Its totient is φ = 31621120.

The previous prime is 63491291. The next prime is 63491341. The reversal of 63491336 is 63319436.

It can be written as a sum of positive squares in 2 ways, for example, as 41344900 + 22146436 = 6430^2 + 4706^2 .

It is a super-2 number, since 2×63491336² = 8062299494129792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63491296 and 63491305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13385 + ... + 17496.

Almost surely, 2^63491336 is an apocalyptic number.

It is an amenable number.

63491336 is a deficient number, since it is larger than the sum of its proper divisors (56022004).

63491336 is a wasteful number, since it uses less digits than its factorization.

63491336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31144 (or 31140 counting only the distinct ones).

The product of its digits is 34992, while the sum is 35.

The square root of 63491336 is about 7968.1450790005. The cubic root of 63491336 is about 398.9374633723.

The spelling of 63491336 in words is "sixty-three million, four hundred ninety-one thousand, three hundred thirty-six".