648075919 has 4 divisors (see below), whose sum is σ = 663147496. Its totient is φ = 633004344.

The previous prime is 648075907. The next prime is 648075931. The reversal of 648075919 is 919570846.

648075919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (648075907) and next prime (648075931).

It is a cyclic number.

It is not a de Polignac number, because 648075919 - 2¹⁹ = 647551631 is a prime.

It is a super-2 number, since 2×648075919² = 840004793575389122, 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 (648075949) 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, 7535724 + ... + 7535809.

It is an arithmetic number, because the mean of its divisors is an integer number (165786874).

Almost surely, 2^648075919 is an apocalyptic number.

648075919 is a deficient number, since it is larger than the sum of its proper divisors (15071577).

648075919 is a wasteful number, since it uses less digits than its factorization.

648075919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071576.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 648075919 is about 25457.3352690340. The cubic root of 648075919 is about 865.3835353540.

The spelling of 648075919 in words is "six hundred forty-eight million, seventy-five thousand, nine hundred nineteen".