65011963 has 2 divisors, whose sum is σ = 65011964. Its totient is φ = 65011962.

The previous prime is 65011957. The next prime is 65011981. The reversal of 65011963 is 36911056.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65011963 is a prime.

It is a super-2 number, since 2×65011963² = 8453110666226738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65011913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32505981 + 32505982.

It is an arithmetic number, because the mean of its divisors is an integer number (32505982).

Almost surely, 2^65011963 is an apocalyptic number.

65011963 is a deficient number, since it is larger than the sum of its proper divisors (1).

65011963 is an equidigital number, since it uses as much as digits as its factorization.

65011963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 65011963 is about 8062.9996279300. Note that the first 3 decimals coincide. The cubic root of 65011963 is about 402.0972409828.

It can be divided in two parts, 6501 and 1963, that added together give a square (8464 = 92²).

The spelling of 65011963 in words is "sixty-five million, eleven thousand, nine hundred sixty-three".