65663956 has 24 divisors (see below), whose sum is σ = 117552960. Its totient is φ = 32086272.

The previous prime is 65663951. The next prime is 65663959. The reversal of 65663956 is 65936656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65663951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31185 + ... + 33223.

It is an arithmetic number, because the mean of its divisors is an integer number (4898040).

Almost surely, 2^65663956 is an apocalyptic number.

It is an amenable number.

65663956 is a deficient number, since it is larger than the sum of its proper divisors (51889004).

65663956 is a wasteful number, since it uses less digits than its factorization.

65663956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 2221 counting only the distinct ones).

The product of its digits is 874800, while the sum is 46.

The square root of 65663956 is about 8103.3299328116. The cubic root of 65663956 is about 403.4369587044.

The spelling of 65663956 in words is "sixty-five million, six hundred sixty-three thousand, nine hundred fifty-six".