63947564 has 12 divisors (see below), whose sum is σ = 112495488. Its totient is φ = 31806000.

The previous prime is 63947561. The next prime is 63947573. The reversal of 63947564 is 46574936.

It is not an unprimeable number, because it can be changed into a prime (63947561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41087 + ... + 42614.

It is an arithmetic number, because the mean of its divisors is an integer number (9374624).

Almost surely, 2^63947564 is an apocalyptic number.

It is an amenable number.

63947564 is a deficient number, since it is larger than the sum of its proper divisors (48547924).

63947564 is a wasteful number, since it uses less digits than its factorization.

63947564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83896 (or 83894 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The square root of 63947564 is about 7996.7220784519. The cubic root of 63947564 is about 399.8907284854.

The spelling of 63947564 in words is "sixty-three million, nine hundred forty-seven thousand, five hundred sixty-four".