648233623 has 4 divisors (see below), whose sum is σ = 648307008. Its totient is φ = 648160240.

The previous prime is 648233611. The next prime is 648233629. The reversal of 648233623 is 326332846.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 648233623 - 2²¹ = 646136471 is a prime.

It is a super-2 number, since 2×648233623² = 840413659975412258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648233629) 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, 21286 + ... + 41827.

It is an arithmetic number, because the mean of its divisors is an integer number (162076752).

Almost surely, 2^648233623 is an apocalyptic number.

648233623 is a deficient number, since it is larger than the sum of its proper divisors (73385).

648233623 is a wasteful number, since it uses less digits than its factorization.

648233623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73384.

The product of its digits is 124416, while the sum is 37.

The square root of 648233623 is about 25460.4324982904. The cubic root of 648233623 is about 865.4537243409.

The spelling of 648233623 in words is "six hundred forty-eight million, two hundred thirty-three thousand, six hundred twenty-three".