65126563 has 4 divisors (see below), whose sum is σ = 65252088. Its totient is φ = 65001040.

The previous prime is 65126557. The next prime is 65126569. The reversal of 65126563 is 36562156.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (65126557) and next prime (65126569).

It is a cyclic number.

It is not a de Polignac number, because 65126563 - 2²⁵ = 31572131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65126569) 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, 61981 + ... + 63022.

It is an arithmetic number, because the mean of its divisors is an integer number (16313022).

Almost surely, 2^65126563 is an apocalyptic number.

65126563 is a deficient number, since it is larger than the sum of its proper divisors (125525).

65126563 is a wasteful number, since it uses less digits than its factorization.

65126563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125524.

The product of its digits is 32400, while the sum is 34.

The square root of 65126563 is about 8070.1030352778. The cubic root of 65126563 is about 402.3333682641. Note that the first 4 decimals are identical.

The spelling of 65126563 in words is "sixty-five million, one hundred twenty-six thousand, five hundred sixty-three".