648222854 has 4 divisors (see below), whose sum is σ = 972334284. Its totient is φ = 324111426.

The previous prime is 648222853. The next prime is 648222857. The reversal of 648222854 is 458222846.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648222853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162055712 + ... + 162055715.

It is an arithmetic number, because the mean of its divisors is an integer number (243083571).

Almost surely, 2^648222854 is an apocalyptic number.

648222854 is a deficient number, since it is larger than the sum of its proper divisors (324111430).

648222854 is a wasteful number, since it uses less digits than its factorization.

648222854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324111429.

The product of its digits is 245760, while the sum is 41.

The square root of 648222854 is about 25460.2210123950. The cubic root of 648222854 is about 865.4489317669.

It can be divided in two parts, 64822 and 2854, that added together give a palindrome (67676).

The spelling of 648222854 in words is "six hundred forty-eight million, two hundred twenty-two thousand, eight hundred fifty-four".