65863956 has 24 divisors (see below), whose sum is σ = 161771680. Its totient is φ = 20799072.

The previous prime is 65863943. The next prime is 65863961. The reversal of 65863956 is 65936856.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 144211 + ... + 144666.

Almost surely, 2^65863956 is an apocalyptic number.

It is an amenable number.

65863956 is an abundant number, since it is smaller than the sum of its proper divisors (95907724).

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

65863956 is a wasteful number, since it uses less digits than its factorization.

65863956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288903 (or 288901 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 65863956 is about 8115.6611560612. The cubic root of 65863956 is about 403.8461411310.

Subtracting 65863956 from its reverse (65936856), we obtain a square (72900 = 270²).

The spelling of 65863956 in words is "sixty-five million, eight hundred sixty-three thousand, nine hundred fifty-six".