65312063 has 4 divisors (see below), whose sum is σ = 68749560. Its totient is φ = 61874568.

The previous prime is 65312053. The next prime is 65312077. The reversal of 65312063 is 36021356.

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 65312063 - 2⁴ = 65312047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65312003) 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, 1718720 + ... + 1718757.

It is an arithmetic number, because the mean of its divisors is an integer number (17187390).

Almost surely, 2^65312063 is an apocalyptic number.

65312063 is a deficient number, since it is larger than the sum of its proper divisors (3437497).

65312063 is a wasteful number, since it uses less digits than its factorization.

65312063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437496.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 65312063 is about 8081.5879009017. The cubic root of 65312063 is about 402.7149948969.

The spelling of 65312063 in words is "sixty-five million, three hundred twelve thousand, sixty-three".