65223861 has 4 divisors (see below), whose sum is σ = 86965152. Its totient is φ = 43482572.

The previous prime is 65223833. The next prime is 65223863. The reversal of 65223861 is 16832256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65223861 - 2⁶ = 65223797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65223863) 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, 10870641 + ... + 10870646.

It is an arithmetic number, because the mean of its divisors is an integer number (21741288).

Almost surely, 2^65223861 is an apocalyptic number.

It is an amenable number.

65223861 is a deficient number, since it is larger than the sum of its proper divisors (21741291).

65223861 is a wasteful number, since it uses less digits than its factorization.

65223861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21741290.

The product of its digits is 17280, while the sum is 33.

The square root of 65223861 is about 8076.1290851496. The cubic root of 65223861 is about 402.5336283517.

The spelling of 65223861 in words is "sixty-five million, two hundred twenty-three thousand, eight hundred sixty-one".