648406415 has 8 divisors (see below), whose sum is σ = 780175968. Its totient is φ = 517332960.

The previous prime is 648406397. The next prime is 648406427. The reversal of 648406415 is 514604846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648406415 - 2²⁴ = 631629199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 171971 + ... + 175700.

It is an arithmetic number, because the mean of its divisors is an integer number (97521996).

Almost surely, 2^648406415 is an apocalyptic number.

648406415 is a deficient number, since it is larger than the sum of its proper divisors (131769553).

648406415 is a wasteful number, since it uses less digits than its factorization.

648406415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348049.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 648406415 is about 25463.8256159596. The cubic root of 648406415 is about 865.5306154438.

The spelling of 648406415 in words is "six hundred forty-eight million, four hundred six thousand, four hundred fifteen".