65624223 has 8 divisors (see below), whose sum is σ = 99998848. Its totient is φ = 37499544.

The previous prime is 65624203. The next prime is 65624243. The reversal of 65624223 is 32242656.

It is an interprime number because it is at equal distance from previous prime (65624203) and next prime (65624243).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65624223 - 2⁶ = 65624159 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 (65624203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562461 + ... + 1562502.

It is an arithmetic number, because the mean of its divisors is an integer number (12499856).

Almost surely, 2^65624223 is an apocalyptic number.

65624223 is a deficient number, since it is larger than the sum of its proper divisors (34374625).

65624223 is a wasteful number, since it uses less digits than its factorization.

65624223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124973.

The product of its digits is 17280, while the sum is 30.

The square root of 65624223 is about 8100.8779153867. The cubic root of 65624223 is about 403.3555695836.

Adding to 65624223 its reverse (32242656), we get a palindrome (97866879).

The spelling of 65624223 in words is "sixty-five million, six hundred twenty-four thousand, two hundred twenty-three".