648793405 has 32 divisors (see below), whose sum is σ = 872653824. Its totient is φ = 459952896.

The previous prime is 648793403. The next prime is 648793447. The reversal of 648793405 is 504397846.

It is not a de Polignac number, because 648793405 - 2¹ = 648793403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648793403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159912 + ... + 163918.

It is an arithmetic number, because the mean of its divisors is an integer number (27270432).

Almost surely, 2^648793405 is an apocalyptic number.

648793405 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

648793405 is a deficient number, since it is larger than the sum of its proper divisors (223860419).

648793405 is a wasteful number, since it uses less digits than its factorization.

648793405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 648793405 is about 25471.4233014176. The cubic root of 648793405 is about 865.7027734558.

The spelling of 648793405 in words is "six hundred forty-eight million, seven hundred ninety-three thousand, four hundred five".