63897576 has 16 divisors (see below), whose sum is σ = 159744000. Its totient is φ = 21299184.

The previous prime is 63897571. The next prime is 63897593. The reversal of 63897576 is 67579836.

It is not an unprimeable number, because it can be changed into a prime (63897571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1331176 + ... + 1331223.

It is an arithmetic number, because the mean of its divisors is an integer number (9984000).

Almost surely, 2^63897576 is an apocalyptic number.

It is an amenable number.

63897576 is an abundant number, since it is smaller than the sum of its proper divisors (95846424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63897576 is a wasteful number, since it uses less digits than its factorization.

63897576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2662408 (or 2662404 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 63897576 is about 7993.5959367484. The cubic root of 63897576 is about 399.7865027342.

The spelling of 63897576 in words is "sixty-three million, eight hundred ninety-seven thousand, five hundred seventy-six".