648496619 has 4 divisors (see below), whose sum is σ = 682628040. Its totient is φ = 614365200.

The previous prime is 648496613. The next prime is 648496687. The reversal of 648496619 is 916694846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916694846 = 2 ⋅458347423.

It is a cyclic number.

It is not a de Polignac number, because 648496619 - 2⁸ = 648496363 is a prime.

It is a super-2 number, since 2×648496619² = 841095729708862322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648496613) 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 3 ways as a sum of consecutive naturals, for example, 17065682 + ... + 17065719.

It is an arithmetic number, because the mean of its divisors is an integer number (170657010).

Almost surely, 2^648496619 is an apocalyptic number.

648496619 is a deficient number, since it is larger than the sum of its proper divisors (34131421).

648496619 is a wasteful number, since it uses less digits than its factorization.

648496619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34131420.

The product of its digits is 2239488, while the sum is 53.

The square root of 648496619 is about 25465.5967729013. The cubic root of 648496619 is about 865.5707500988.

The spelling of 648496619 in words is "six hundred forty-eight million, four hundred ninety-six thousand, six hundred nineteen".