65247563 has 4 divisors (see below), whose sum is σ = 65745768. Its totient is φ = 64749360.

The previous prime is 65247557. The next prime is 65247571. The reversal of 65247563 is 36574256.

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

It is a cyclic number.

It is not a de Polignac number, because 65247563 - 2⁶ = 65247499 is a prime.

It is a super-3 number, since 3×65247563³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65247583) 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, 248906 + ... + 249167.

It is an arithmetic number, because the mean of its divisors is an integer number (16436442).

Almost surely, 2^65247563 is an apocalyptic number.

65247563 is a deficient number, since it is larger than the sum of its proper divisors (498205).

65247563 is a wasteful number, since it uses less digits than its factorization.

65247563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498204.

The product of its digits is 151200, while the sum is 38.

The square root of 65247563 is about 8077.5963627802. The cubic root of 65247563 is about 402.5823819645.

The spelling of 65247563 in words is "sixty-five million, two hundred forty-seven thousand, five hundred sixty-three".