65963956 has 6 divisors (see below), whose sum is σ = 115436930. Its totient is φ = 32981976.

The previous prime is 65963921. The next prime is 65963971. The reversal of 65963956 is 65936956.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 839056 = 8070^2 + 916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8245491 + ... + 8245498.

Almost surely, 2^65963956 is an apocalyptic number.

It is an amenable number.

65963956 is a deficient number, since it is larger than the sum of its proper divisors (49472974).

65963956 is a wasteful number, since it uses less digits than its factorization.

65963956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16490993 (or 16490991 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 49.

The square root of 65963956 is about 8121.8197468301. The cubic root of 65963956 is about 404.0504217694.

Subtracting from 65963956 its reverse (65936956), we obtain a cube (27000 = 30³).

The spelling of 65963956 in words is "sixty-five million, nine hundred sixty-three thousand, nine hundred fifty-six".