63676431 has 72 divisors (see below), whose sum is σ = 119508480. Its totient is φ = 32344704.

The previous prime is 63676423. The next prime is 63676453. The reversal of 63676431 is 13467636.

It is a happy number.

63676431 is a `hidden beast` number, since 6 + 3 + 6 + 7 + 643 + 1 = 666.

63676431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63676431 - 2³ = 63676423 is a prime.

It is a super-2 number, since 2×63676431² = 8109375729795522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63676471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 166066 + ... + 166448.

It is an arithmetic number, because the mean of its divisors is an integer number (1659840).

Almost surely, 2^63676431 is an apocalyptic number.

63676431 is a deficient number, since it is larger than the sum of its proper divisors (55832049).

63676431 is a wasteful number, since it uses less digits than its factorization.

63676431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 435 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 63676431 is about 7979.7513119144. The cubic root of 63676431 is about 399.3247586810.

The spelling of 63676431 in words is "sixty-three million, six hundred seventy-six thousand, four hundred thirty-one".