65612263 has 4 divisors (see below), whose sum is σ = 69065560. Its totient is φ = 62158968.

The previous prime is 65612257. The next prime is 65612273. The reversal of 65612263 is 36221656.

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 65612263 - 2⁹ = 65611751 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 (65612233) 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, 1726620 + ... + 1726657.

It is an arithmetic number, because the mean of its divisors is an integer number (17266390).

Almost surely, 2^65612263 is an apocalyptic number.

65612263 is a deficient number, since it is larger than the sum of its proper divisors (3453297).

65612263 is a wasteful number, since it uses less digits than its factorization.

65612263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453296.

The product of its digits is 12960, while the sum is 31.

The square root of 65612263 is about 8100.1396901535. The cubic root of 65612263 is about 403.3310642740.

The spelling of 65612263 in words is "sixty-five million, six hundred twelve thousand, two hundred sixty-three".