648944094 has 32 divisors (see below), whose sum is σ = 1381950720. Its totient is φ = 202447232.

The previous prime is 648944071. The next prime is 648944099. The reversal of 648944094 is 490449846.

It is a happy number.

It is a super-2 number, since 2×648944094² = 842256874274961672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648944099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487 + ... + 36029.

It is an arithmetic number, because the mean of its divisors is an integer number (43185960).

Almost surely, 2^648944094 is an apocalyptic number.

648944094 is an abundant number, since it is smaller than the sum of its proper divisors (733006626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648944094 is a wasteful number, since it uses less digits than its factorization.

648944094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35744.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 648944094 is about 25474.3811308538. The cubic root of 648944094 is about 865.7697910847.

The spelling of 648944094 in words is "six hundred forty-eight million, nine hundred forty-four thousand, ninety-four".